1.You                     (can't,won't,shouldn't) eat so many sweets-they aren't good for you.

2.'My tooth really hurt!'I think you                   (mustn't,will,should) go to the dentist's'.

3.You                 (can't,shouldn't,mustn't)stand on the desk.You'll break it.

4.You                  (should,mustn't,shouldn't) never speak to your mother like this.

5.You                 (will,must,shouldn't) do your homework more carefully.

Choose the correct answers A, B, C or D to complete the following sentences. 

1. You ________________ learn to keep your bedroom tidy. No one can clean it for you.

A. must                 B. had to               C. mustn't                   D. shouldn't

2. Fifty years ago, my grandmother ________________  stay at home and do all housework. She couldn't go to school like her brothers.

A. must              B. had to              C. didn't have to               D. should

3. You ________________ wear shorts to school. It's against the school rules.

A. should               B. have to                 C. mustn't              D. don't have to

4. I think parents ________________ compare their children to other's. They will become less confident in their abilities.

A. should                B. have to               C. must                   D. shouldn’t

5. My parents respect my choices. I ________________ follow in their footsteps.

A. don't have to                  B. mustn't                C. should               D. have to

3. Read the Learn this! box and complete the rules. Use must, mustn't, needn't and don't have to. Use your answers to exercise 2 to help you.

(Đọc hộp Learn this! và hoàn thành các quy tắc. Dùng must, mustn't, needn't and don't have to. Sử dụng các câu trả lời trong bài 2 để giúp bạn.)

LEARN THIS! must, mustn't and needn't/ don't have to

a. We use (1) _____ to say that something is necessary or very important to do.

b. We use (2) _____ and (3) _____ to say that something is not necessary.

c. We use (4) _____ to say that something is prohibited (a negative order)

Note: We can also use passive forms after modal verbs.

Helmet must be worn at all times.

Complete the sentences using by or until.

1. I'II get home late this evening.

=> I won't get home _____________________.

2. The shop opens again on Monday.

=> The shop closed ____________________.

3. You mustn't return the books later than the end of next week.

=> You must return the books _____________________.

4. Our lessons finish at four o'clock.

=> We have lessons _____________________.

5. I don't usually go to bed later than midnight.

=> I usually go to bed _____________________.

6. Ben should know the results on the 15th.

=> Ben should know the results _____________________.

7. She lived in our town. She moved away last year.

=> She lived in our town _____________________.

8. We can't be at the airport later than eleven.

=> We have to be at the airport _____________________.

9. I will next see Iris in summer

=> I won't see Iris _____________________.

10. You'II have to get up at six or earlier tomorrow.

=> You'II have to get up ____________________.

Complete the sentences using by or until.

1. I'II get home late this evening.

=> I won't get home _____________________.

2. The shop opens again on Monday.

=> The shop closed ____________________.

3. You mustn't return the books later than the end of next week.

=> You must return the books _____________________.

4. Our lessons finish at four o'clock.

=> We have lessons _____________________.

5. I don't usually go to bed later than midnight.

=> I usually go to bed _____________________.

6. Ben should know the results on the 15th.

=> Ben should know the results _____________________.

7. She lived in our town. She moved away last year.

=> She lived in our town _____________________.

8. We can't be at the airport later than eleven.

=> We have to be at the airport _____________________.

9. I will next see Iris in summer

=> I won't see Iris _____________________.

10. You'II have to get up at six or earlier tomorrow.

=> You'II have to get up ____________________.

1. She left and hurt............... a. her b herself c. himself d. myself 2. They bought............. a new car a. theyseif b. theyselves c themselves d. themself 3. They........... talk in the library a. mustn't b. don't have to c. shouldn't to d. needn't to 4. He............ wear a suit to work but he usually does. a. doesn't have to b. mustn't c. have to d. must 5. ....... not ask Kate to go with you? a. When b. Why c. What d. Who 6. I asked Sara......... me to the station a. drive b. drives c. to drive d. driving 7. Her parent won't let her............... with her friends. a. go out b. goes out c. to go out d. going out 8. It takes a lon time.................. a language a. learn b. to learn c. learning d. learns 9. From the tower, they looked down on the city.............. a. abive b. beneath c. over d. next 10. Our lives depend on......... a. electric b. electricity c. electrically d. electrical ( mink đag cần gấp)