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Tense exercises


tense exercises All downloads are in PDF Format and consist of a worksheet and answer sheet to Downloadable Exercises; Blog; About; Narrative Tenses Quiz Answer the questions and then click next, answers will be shown at the end. It verb practice introduction. Choose the correct answer: CiViS PRACTICE EXERCISES: SIMPLE FUTURE TENSE! 1. Exercise 4: Fill in the chart with the correct forms of the verbs. It doesn't matter when in the past they happened or how long they happened for. Pepe _____ (shall- to put) the popsicles in the freezer. A: Did you like the movie "Star Wars"? B: I don't know. Complete the sentences with the present simple or present continuous form of the verbs in brackets. When deciding which verb tense to use, aim for consistency, simplicity, and clarity. Present simple/progressive, present perfect simple/progressive, future I simple/progressive. Choose (izberi) exercise 1 . It will snow in Brighton tomorrow evening. Present Perfect Continuous Tense Exercise, Progressive, Simple Past, ESL Quiz, Grammar Exercises ADVERTISEMENTS: We must keep in mind the sequence of tenses. All English verb tenses. Questions – Exercises Questions and answers – Exercise · Questions in English and the tenses – Questions in the Simple Past – A1 Eingangskurs Grammar Exercises Sprachenzenrtum Universität Bayreuth. Exercises with verbs that chage meaning in the preterite tense (conocer, saber, querer, poder, estar). The present tense (abbreviated PRES or PRS) is a grammatical tense whose principal function is to locate a situation or event in present time. Complete the following sentences with the correct form of the indicated verb. All downloads are in PDF Format and consist of a worksheet and answer sheet to CiViS PRACTICE EXERCISES: SIMPLE FUTURE TENSE! 1. My girlfriend is working in the disco today. To review the present tenses see http://www Anonymous said this blog is helpful. Ice cream is going to melt (to be going- to melt) at room temperature. In these online English lessons students learn how to use verbs in the past, present, and future tense. Check the following sentences for confusing shifts in tense. Choose the correct verbs so that each tense appears once. Free online lessons and exercises on verb tenses. Every Monday, Sally (drive) … English grammar practice exercise, for pre-intermediate and intermediate level. You do not keep your word. He moves up the mountain like a packhorse, crunching many small sticks and branches underfoot. 7:00 wake up 7:30 eat breakfast at home go out for breakfast Exercises. The English Learning Lounge Free apps on both Apple and Android. We . These present continuous exercises will help you master this simple tense. Tenses; Tenses . ego4u. TENSES EXERCISES. com - Free ESL worksheets, ESL printables, English grammar handouts, free printable tests, downloadable English grammar tests 10 Minute Tense and Release:During this exercise you will be focusing on one muscle at a time, squeezing and contracting it for about 10 seconds and then totally letting go of the muscle. Look at the picture and read the sentence. Here you can find a collection of Verb tenses downloadable and printable worksheets, shared by English language teachers. Positive statements. English grammar exercises and quizzes online. I (learn) English for seven years now. Add these easy yet effective exercises to your routine to get fitter, In these exercises, your muscles tense up, promo code greatist buy now. Top of page. But last year I (not / work) hard enough for English, that's why my marks the future tense with “going to”. English test titled Tenses - Test on English tenses, for online english learners at the Intermediate level. exercises Hadiyah is studying Review your knowledge of verb tenses and improve your English language skills with this reference chart of the 13 verb forms. Grammar quizzes. Unit 1: Present Tenses A: Put in the present continuous form of the verb in brackets. This is a principle according to which, the tense of the verb in the subordinate clause, follows the tense of the verb in the principal clause, as per the following rules Rule no. Continue with the exercises. Here you can find English exercises to learn or practice Future Tense Future tenses Exercise Answers 1. English Exercises - "Past Continuous" Ex. Present Indefinite Tense/Simple Present Tense its usage in English Grammar and Importance to English Language. Present Tense - To Be Type the correct word in the boxes below. Past Tenses. Questions | Answers. I am helped by my father. simple action in the past → simple past Here we look at all the English Tenses - Grammar Explanations help you see what tense to use and when with examples to help you. You English tenses exercises - lower intermediate level. This grammar exercise tests your understanding of various tense forms and their uses. Janet _____ karate class every Saturday. All the answers are correct. Here are some links for mixed tenses practice: -exercise 1 -exercise 2 -exercise 3 -exercise 4 -exercise 5 -exercise 6 -exercise 7 In addition, there are some interesting and useful sites where you can find a lot of grammar exercises. (do not / does not / has not) Present simple exercises affirmative forms - elementary level esl. 1. already graduates b. Narrative tenses - Simple story - A lucky escape Story ordering and gap fill exercises for a simple story using narrative tenses: past simple, past continuous and past perfect (including some passives). By learning these words and using them, you will increase your ability to understand Sanskrit texts. See what works for you. Do you know the correct form of the verb for Verb Tenses Test 3 Verb Tenses Exercise. Practise your present simple and present continuous tenses with this video - put the verb into the correct tense. I [?] Because I need exercise, I run to the park and back home. hope you will post another english grammar exercises. Click on the words in the correct order to make different sentences in the Present Continuous Tense - positive; negative; yes/no and information questions. simple action in the past → simple past Are you studying the Italian language? Here are some workbook exercises to help you with your skills. show special characters. will have already graduated The Imperfect Tense is used to describe events, the time in the past, the appearance of a person or thing in the past, habits or routines in the past. 9. He estudiado Has comido Ha vivido Hemos dicho Habéis hecho Han PRETÉRITO INDEFINIDO. Test your Italian with this free interactive exercises. The train arrives at 12:30. mix tenses exercises - Learn English Third conditional - English Third conditional : free exercise for ESL/EFL learners. Exercise 23 - Review of the Past Progressive Tense; Exercise 24 - Simple Past Tense and Past Progressive Tense; English grammar exercises and quizzes online. These particular ones will help you practice using and conjugating various regular and irregular verbs and verb tenses in Polish. Simple Tense. It could be a positive sentence, a negative sentence or a question. 1, ex 2 and ex 3 Adele´s ESL Corner: "Past Continuous Tense -1" "Past Continuous Tense -2" "Past YileilillyFill in the blanks with the correct form of words given: This is clearly an exercise designed to give you a chance to test your own abilities in English verb tenses. to the cinema last week. He helps the poor. Mixed tenses. Try these! Some Shoulder Tense Breaking Muscle Hip Mobility Hip Flexor Strengthening Routine and there are better ways to integrate core strength training exercises into every exercise you perform that most exercisers think workout targets the reduced abdominal muscular tissues Result Online quiz to test your understanding of the Present Continuous tense in English. Cloze exercises. Куприна Р. I was Exercise 1 Learn Tense Shoulder Exercises Best Drugs For Back Pain Relief Right Hip Area Pain and there are better ways to integrate core strength training exercises into every exercise you perform that most exercisers think workout targets the reduced abdominal muscular tissues Infomation Tenses, English Tenses include tenses types and Tenses Chart. Base Form Present Tense Past Tense Present Perfect Tense The topics covered include verb tenses, phrasal verbs, articles, prepositions, noun clauses, EXERCISES TO IMPROVE YOUR ENGLISH WRITING SKILLS (ADVANCED) Learn how to form positive sentences with the verb to be ( am / is / are ). . 2. The market _____ usually noisy in the morn Tense chart. a. Exercises on simple present tense. Learn English language. Complete the sentences. Questions. Click on the verb tense to read more about how to form this tense and how it is used, or select a time to see the full list of tenses and references on that time. Past Tense. I buy some carrots at the store. Welcome to French verb practice at UT Austin. Come learn English with English Maven. We are going to have dinner at a seaside restaurant on Sunday. will have 6. Master these questions and learn the rules and you'll be an expert in no time. Includes detailed terms, interactive exercises, handouts, PowerPoints, videos, and more! Updated 7-30-12 Modal and Perfect Tenses Past modal perfect tense is used when it is unknown if the subject performed an action in the past, but it’s possible, necessary, or likely. signal words so far, emphasis on the result → present perfect simple Exercises. Learn what the 12 tenses can be used for with examples. All English exercises free and with help function, teaching materials and grammar rules. Click the gray arrow top right to go to the next question. In the following exercise, you will be presented with sentences, some of which contain inconsistency of tense. Many irregular verbs. BEGINNER. TEFL teacher explores grammar and language points with exercises, quizzes and some opinionated rants Free Italian exercises for beginner and intermediate levels. Mixed Verb Tenses Exercise. doc / . This is an interactive online exercise about using different tenses in English. If the tense of each underlined verb expresses the time relationship accurately, write S (satisfactory). Try our free exercises to build knowledge and confidence. Also includes video tutorials, audio lessons and listenings Consistency of tense. (or is going to snow) › Grammar › Tenses › L’imparfait › L’imparfait - Exercises. There are 12 basic English tenses: Present Simple, Present Continuous, Present Perfect, Present Perfect Continuous; Past Simple, Past Continuous, Past Perfect, Past Perfect Continuous; Future Simple, Future Continuous, Future Perfect, Future Perfect Continuous He moves up the mountain like a packhorse, crunching many small sticks and branches underfoot. English Grammar Tense Exercises - All exercises can be done online English language learners (ELLs) are faced with a variety of challenges. English Grammar exercises , English Verb Tenses grammar english grammar exercises, teach esl, teaching materials, games, efl,english grammar exercises Present simple tense - exercises - The English Room Self-access Corner. com/en/cram-up/grammar/present-progressive/form/exercises The English Learning Lounge Free apps on both Apple and Android. Present Simple Tense 2 Grammar rules, verb tenses and forms, prepositions, phrasal verbs, parts of speech and vocabulary usage, with exercises, for ESL-EFL learners of all levels. You need to tick the sentences that contain tense inconsistencies. I . Free exercises on english tenses (mixed tenses. End of the free exercise to learn English: Mixed tenses A free English exercise to learn English. Find the best free online grammar exercises on www. Put the verb into the correct form. future simple (She / win the Here you can find English exercises to learn or practice Verb Tenses Spoken English के इस चैप्टर में आपको Tense Chart in Hindi & English उदाहरण दिए जायेंगे जिससे आपको All Tense / Verb के Rules / Formula आसानी से समझ आ सके| Move the mouse over an answer to insert it in the sentence. docx), PDF File (. learnenglishfeelgood. Exercise 1: Past simple and past continuous. Present Continuous Tense . does not use auxiliary verbs refers to specific time period during which Future Tense Forms: Interactive practice with grammatical explanation. Fill in the blanks with an appropriate tense form. Tenses Past Tense Verbs 2 will help students practice this key fourth grade skill. Online and PDF exercises with answers + grammar rules with examples. this Christmas 5. Example: My dog (be) is sick today. Review your knowledge of verb tenses and improve your English language skills with this reference chart of the 13 verb forms. Verbal tenses in English. 3. languageguide-online. This Past Simple Tense Exercises 1) Complete the sentences with the SIMPLE PAST of the verbs in parentheses: a) They _____ (watch) TV last night. Review of past, present, and future tenses, with sample sentences and answers/ Grammar Bytes! Grammar Instruction with Attitude. Н. Englisch-hilfen. Present - to be. Selecting the correct verb tense and conjugating verbs correctly is tricky in English. Put the verbs in brackets into the past simple or the past continuous. This exercise asks you apply your knowledge of tense consistency by recognizing shifts in tenses. (or is going to snow) Future tenses Exercise Answers 1. Verb tenses test checks your understanding of the major verb tenses in English. the blanks in the exercise with the simple present tense or a frequency or time expression. Learn Spanish grammar with our free helpful lessons and fun exercises at StudySpanish. five e-mails so far. Grammar rule for this question: Click the answer to check it. Present simple , present continuous/progressive , past simple , past continuous , present perfect (simple/continuous) , past perfect/pluperfect (simple/continuous) , future tenses , modals , conditionals, passive , regular and irregular verbs English grammar exercise is a free to use resource for students to study all aspects of learning English grammar: adverbs, adjectives, nouns. Yesterday (to be) _____ a busy day. b 3. ALL TENSES (PRESENT, PAST, FUTURE) An exercise by Montse Morales for The English Learning Website. Present Perfect - Exercises. See if you can write the correct form of the verb depending on the tense. This is a free multiple-choice quiz that you can do online or print out. The exercises for homework easy. . pdf), Text File (. L’imparfait - Exercises. txt) or read online. ) If I had known (that) your dog is aggressive, Practices & Exercises – Palo Alto, California USA — Here you’ll find a plethora of exercises that’ll help you master the Present Continuous tense!Have fun 🙂 (You can use this app to open all of the links at once) http://www. Join my complete self-study programme Have you been exercising with Glen? Has Glen exercised lately? Is Glen exercising right now? Only answer 3 is correct. A comprehensive site for free English courses and exercises. you can continue with the exercises. When I opened my eyes, I saw a strange sight. g. She rides on his shoulders like a child. पहचान : इस Tense के वाक्यों मे काम का करना या होना भूतकाल मे पाया जाता है । ऐसे वाक्यों के अन्त मे 'आ', 'या ', 'ई ', 'ये', 'यो ', 'ता था', 'ते थे ', 'ती थी Present Simple Verbs Click the answer button to see the answer. Students can do exercises 3 and 4 before you do feedback as a tenses and go over good usage and correct misuse in the Tenses Exercise: Quiz on ENGLISH TENSES. English Grammar Online Exercises and Downloadable Worksheets. Practise grammar with free Italian exercises! Exercise in Verb Tense Consistency (js) Consistency in Tense and Pronouns (cgi) The Guide to Grammar and Writing is sponsored by the Capital Community College TEFL teacher explores grammar and language points with exercises, quizzes and some opinionated rants English Verb Tenses: supplementing it with exercises from other sources and ones I wrote myself, and that’s worked well. Tenses. Test your knowledge of Italian verb tenses with our interactive grammar exercises. Overview; Indicators; Exercise 1; Exercise 2; PRETÉRITO PERFECTO. There are 18 sentences to practice in this worksheet. German Perfect Tense: Summary of important structures and rules with examples, followed by self-scoring exercises - Perfekt Zeitform der Verben mit Übungen Past Tense Simple or Progressive? 8 Present EXERCISE I Use either the simple present or the present progressive of the verbs in parentheses. Test yourself with this quick future tenses exercises, complete the sentences by choosing the correct future tense form for each verb, left blank. Sentence mix Future tenses. Tenses in English, statements - free Exercise, Mix - Learn Online Printable & Online ALL verb tenses practice exercises with answers for English teachers and students English grammar exercises and quizzes online. Short grammar reference and practice exercises. Mixed tenses Present Simple, Present Continuous, Past Simple . Answers 1. English grammar lesson Recommended Post - Solve Hindi Exercises based on Simple Present Tense (Present Indefinite) Tenses - English to English Translation. You can choose to do the easier exercises, where gaps for missing articles are indicated, or the harder exercises, where no gaps are indicated. Take a look and compare the present tense verbs with simple past tense verbs in these two sentences. I am not studying at the moment We use the Past Continuous Tense for an action that was in progress at a particular time in the past. Français Interactif includes authentic, spoken French language via digital audio and video clips, a French grammar reference (Tex's French Grammar), self-correcting French grammar exercises, vocabulary What's the past tense of exercise? Here's the word you're looking for. Click the link at the bottom of the page to see the answers. Other English exercises on the same topic : Find the correct tense 33 Simple Past Tense Exercises for ESL, EFL, ELL students from beginning to advanced learners. English all tensesexercises, tests and answers. 3 Verb Tenses Tutorial Exercise 5 Simple Past / Present Perfect 1. ESL Grammar exercise, Present Perfect vs. Anonymous said I would suggest having an activity or activities on solely the past perfect before asking writers to do activities comparing past and past perfect. cl A) Change the verbs in brackets into the past tense. 10 Minute Tense and Release:During this exercise you will be focusing on one muscle at a time, squeezing and contracting it for about 10 seconds and then totally letting go of the muscle. Use of the correct verb tense allows you to express clearly the time relationships among your ideas. KEEPING TENSES CONSISTENT IN PARAGRAPH WRITING Objectives: * To supply the appropriate form of the verb in the sentences of a paragraph so that consistency of ENGLISH GRAMMAR, TENSES Page 3 of 38 Are you, we, they late? Is he, she, it late? How do we use the Simple Present Tense? We use the simple present tense when: Exercise 1 - Learn when and how to use the verb tenses for your exam. Free English online grammar exercises. For ESL learners. grammar. ) Printable and online mixed verb tenses exercises with answers 1-- Fill in the blanks with the correct tense Exercise : Tense Consistency Exercise 1 Recognizing Shifts in Sentences. The tenses are not specified in the instructions, therefore the students have to decide on their o Exercises on Tenses in English. Fill in the blanks using the verbs in the bracket to complete the conversation. Answer: Tense Consistency Exercise 1 In most cases with an inappropriate shift below, there is more than one way to correct the inconsistency. is going to practise 2. English language quiz on narrative tenses (Quiz 02) for stdudents of English as a foreign or second language (EFL / ESL). Am-Is-Are 1: Present Simple Negation 1: Am-Is-Are 2 English Tenses - Free Grammar Exercises - Learning English. On the line, tell Exercises: Present Tense Verbs. Verb exercises Fill in the blanks with an appropriate verb form. Exercise 2 for the present tenses. Printable fill-in-the-blank worksheets. de/ English Tenses – English Grammar Exercises. Some are regular and some are irregular. English tense exercise, fill in the empty boxes, using the most appropriate tense form for each space. › Grammar › Tenses › Present Perfect › Present Perfect - Exercises. Change verbs from the preterite tense to the future. Check your grammar: true or false – present continuous Put the verb in the present continuous tense. Menu. Great for Use in School or at Home. Exercises. Now, I am playing my guitar . Let us know how you did. An index to Spanish Perfect Tenses quizzes with answers. am: are: is: 1. Exercise instructions Interactive exercises for engineers and scientists to strengthen Note that in the "Introduction" of this report the tense choice for this sentence would be the English vocabulary activities - quizzes, matching exercises and hangman games English Verb Tenses Form and Use . e 5. The pigeon ………………………. Français Interactif includes authentic, spoken French language via digital audio and video clips, a French grammar reference (Tex's French Grammar), self-correcting French grammar exercises, vocabulary Tex's French Grammar is the integral grammar component of Français Interactif, an online French course from the University of Texas at Austin. Present Tense: First-Conjugation Regular Verbs A. Let them fully comprehend and learn to use the tense before moving on to distinguishing it from oth Learn how to use the present tense and -ir verbs with quality free French lessons and grammar French exercises. ) Tense Consistency Exercise 1. Present Simple, English Tenses - Matching Game Exercise. Fill the gaps with the correct tenses. Simple past, past progressive, past perfect simple, past perfect progressive. On 3. Example: My father helps me. exercise 1, exercise 2, exercise 3, exercise 4 Verb Tense Exercises Exercise 1: Put the words in parentheses into the appropriate tenses, Simple Present or Present Continuous 1. Simple Past Tense Questions And Answers Exercises Questions, Question words, Learning English Online. Almost every lesson in this guide features some common vocabulary words for you to learn. Improve your knowledge of the Italian Present Tense by doing this online interactive exercise. will have improved 78 • Unit 18: Present Perfect Tense vs. Going to/will. (present tense) Example: My dog (be) was sick last night. In this exercise you will practise forming the past perfect simple tense. Title: To Be - Past Tense Exercises Author: Rob Woodward Subject: To Be - Past Tense Exercises Keywords: English; Grammar; To Be; Past Tense; Exercises Past Tense Irregular Verbs www. (write - am writing) Check your answers. These exercises explain how to correctly conjugate verbs through practice and repetition. English exercises on grammar and vocabulary, with answers - verb tenses and forms, parts of speech, prepositions, phrasal-verbs and business-english, for EFL- ESL learners of all levels. Fill in the blanks with an appropriate verb form. There are three main verb forms for showing time or tense: Simple Tense. know the art of nest making. Type the the missing verbs. In this exercise you will practise using different tenses (present simple, present continuous, past simple, present perfect and future simple). The formal study of the various moods and tenses of Spanish verbs will be be spread out over several weeks of the semester, and the individual exercises will normally concentrate on the tense/mood being studied. Verb tenses worksheets for use in school or at home. 7 We shall begin our study of the subjunctive mood with the present subjunctive tense. Learning basic English, basic lessons, Grammar, basic English lessons ,conversation, Vocabulary, Exercises, Learn English free, Books, English basics level 1. This worksheet contains one mixed exercise based on the present and past tenses of English. Here you’ll find a plethora of exercises that’ll help you master the Present Continuous tense!Have fun 🙂 (You can use this app to open all of the links at once) http://www. Use these tenses: present simple (I do), present continuous (I am doing), past simple Practice irregular and regular verb tenses with VocabularySpelingCity using online activities for kindergarten through high school. a 2. I ___ a letter now. Mixed English Tenses within context This English exercise video will allow you to practise all the tenses in the English language. The simple past tense is one of the most common tenses in English. Tex's French Grammar is the integral grammar component of Français Interactif, an online French course from the University of Texas at Austin. Sometimes we make sentences which mix Mixed Future Tenses Exercise 1 Make the future tenses. com/en/cram-up/grammar/present-progressive/form/exercises The first section, on the use of articles in English (a/an/the), has a video story and a series of exercises. will start 7. Grammar, Vocabulary, Reading, Listening and much more. He from India. Get started on your way to speaking Spanish conversationally! Choose the correct form of "to be" in present tense or past tense. She wears a child-sized summer dress, and her bare legs are almost lost in his beard. She gathers flowers. Fill in each of the blanks with the correct form of the present tense. good job 28 July 2011 at 09:24 Anonymous said I agree with Anonymous Exercise 1: Present simple or present continuous? Choose the correct tense. 1: A Past Tense in the principal clause is followed by a […] Adele´s ESL Corner: Present Simple Tense 1. display incorrect answers. Signup to our newsletter "English in your Mixed tenses in context exercise - Download as Word Doc (. Narrative tenses by Rachael Nobbs . Overview of the Tenses; Present Tense; Present Exercise. The exercises on our site are designed for beginners and intermediate level students. Fun exercises to improve your English. Free English verb tense tutorial with detailed tense descriptions and 30 verb tense exercises. Dashboard; Simple Present Tense Exercises. By the end of the year, she ___ with a degree in business. Verb Tense Review by Dennis Oliver American Language and Culture Program, Arizona State University Special Instructions: After choosing the most logical verb tenses Verb Tense Consistency. com. Review the different uses of “going to” and “will” below before completing the exercise that follows. Single tense. (do not / does not / has not) This verb tenses exercise is 30 questions on all the English verb tenses. This free beginner grammar test includes quiz answers & results. e. ( attend ) 2. Choose the most appropriate answer. This worksheet is aimed at practicing all future tenses, some sentences are very simple, others are quite difficult. c B 1. Future Tenses – Answers A 1. English quiz about 'Present Simple'. Name: _____ Past, Present, and Future Tense Verbs Draw a circle around the action verb in each sentence. Negative statements. ESL fun Games and Activities online,Pactice differentiating English tenses by doing this matching exercise. The best way to help you students understand the various present tenses is to provide them with plenty of exercises to practice. The German perfect tense implies that a present tense verb is describing a past event, View all exercises of "Tenses & moods" Exercise 1 - Present simple and continuous. com Use the simple past tense to talk about actions that have already finished. Future Tense Verbs 3 will help students practice this key fifth grade skill. Exercise 1 - Present simple and continuous. Lots of English grammar exercises and quizzes both online and in PDF to help you practise your English. Past Tense Exercise. Advertisements. Упражнение 2 на времена настоящего времени. In this section, you will conjugate a series of verbs, in one of various tenses. Past Simple Grammar Exercise 2 ALL TENSES (PRESENT, PAST, FUTURE) An exercise by Montse Morales for The English Learning Website. No sign-up required. Past Tense of Verbs Practice. The other tenses of the subjunctive verb system will be taken up later. Use them either in the past or present tense. Type the sentences into the box. Free interactive and printable exercises about English verbs and tenses. Free exercises on the use of the the simlpe past tense English Pool of Exercises on Tenses :: Learn English online - free exercises, explanations, games, teaching materials and plenty of information on English language. Every morning she First of two exercises on the differences between simple present and present continuous. tenses German perfect tense. Interactive, online grammar and vocabulary tests. English grammar exercise, elementary level. Verb Tenses Click the answer button to see the answer. © Olga Godoy Giménez, 2002 - 2007 (Keeping all tenses in the past time frame is more formal. Free Online English Lessons and exercises on verb tenses. Present Perfect Tense, Continuous Exercise, Progressive, Simple Past, ESL Quiz, Grammar Exercises Fill in each of the blanks in the dialogue below with the correct present tense. Exercise Simple Present Tense change the voice. Tense exercise for kids. Explanations and examples along with tests and exercises online to practise English tenses. d 4. Interactive exercises for all levels. Mixed Tenses Exercises: Choose the correct tense. One of these challenges is understanding and using grammar correctly. You a good friend. tense exercises