Modal verbs bài tập cơ bản

EXERCISES
I. Underline the best answer from each group in italics
1. Bookings need/ must be made at least seven days before departure.
2. In most developed countries, people mustn’t/ don’t need to boil water before they drink it.
3. You needn’t/ mustn’t go on the beach when the tide’s coming in. It’s very dangerous.
4. I often have to/ must work at the weekend to get everything done.
5. Changes in technology mustn’t / needn’t be a problem, but could be seen as a great
opportunity.
6. We’ve been told that we don’t have to/ mustn’t be at work until 10:00 tomorrow.
7. When you have time, we must/ have to get together for a weekend.
8. We mustn’t/ needn’t allow our speed of production to drop.
9. As you worked late yesterday you needn’t/ mustn’t come until 10:00 tomorrow morning.
10. Employees will have to/ have got to accept the new conditions or be dismissed.
11. Of course the first thing I did was to call the police and I mustn’t/ didn’t have to wait very
long for them to get there.
12. You mustn’t/ needn’t have a university degree to become a police officer.
13. Nowadays it needn’t/ mustn’t cost a fortune to own a powerful computer.
14. I don’t have to/ mustn’t remind you that we are competing with two other companies.
II. Change the following active sentences to the passive
1. People should save pandas from extinction.
2. People must obey all traffic laws.
3. Someone ought to repair this broken window.
4. Someone should have supplied the hotel guests with clean towels.
5. Someone had better take this garbage to the dump soon.
6. People can pick tomatoes before they are completely ripe.
7. Someone is supposed to divide the profits among the shareholders.
8. Someone must have hurt Peter’s feelings.
9. Someone has to finish this work today.
10. Someone ought to have reported the accident to the police.
III. Choose the correct answer:
1. “Have you seen John?” “No. But he _________ be studying in the library.

A. will
B. should
C. needn’t
D. may
2. As I won’t be at home tonight, I ____ my homework during my lunch break.
A. need to do
B. have to do
C. can do
D. might do
3. Passengers ___ smoke until the signs have been switched off.
A. mustn’t
B. can’t
C. needn’t
D. mightn’t
4. There are a lot of tickets left, so you ___ pay for the tickets in advance.
A. mustn’t
B. won’t
C. shouldn’t
D. don’t have to
5. You ___ put anything on the shelves until the glue has set hard.
A, couldn’t
B. mustn’t
C. don’t have to D. needn’t
6. I ___ my best suit to the party yesterday; everyone else was very casually dressed.
A. needn’t wear B. mustn’t wear C. needn’t have worn
D. mustn’t have worn
7. I didn’t meet him yesterday. He ___ on business.
A. must go
B. should go
C. must have gone D. should have gone

8. “What are you doing this weekend?” “I haven’t decided yet. I ____ go on a picnic with my
family.”
A. may
B. may not
C. must
D. needn’t


9. You ___ wash the car. I just had it done yesterday.
A. mustn’t
B. needn’t
C. must
D. may not
10. It’s a secret. You ___ let anyone know about it.
A. mustn’t
B. needn’t
C. mightn’t
D. may not
11. I’m not sure. I ___ come a few minutes late.
A. may
B. must
C. mightn’t
D. may not
12. Bring your umbrella. It may rain later today.
A. can’t
B. may
C. might
D. B & C
13. Secondary school students nowadays ____ wear uniform.
A. have to

B. need to
C. should
D. could
14. We have some days off after the exam. ___ spend some time together?
A. let
B. Shall I
C. Shall we
D. Would you like
15. John isn’t in his office. He ___ at home today.
A. may staying
B. may have stayed
C. may be stayed D. may be staying
16. The best way will ___ after all.
A. find
B. be finded
C. be found
D. be founded
17. What he has done to me cannot ___.
A. forgive
B. forgiven
C. be forgave
D. be forgiven
18. A lot of things ____ at the same time.
A. must do
B. must have done C. must be done D. must been done
19. Do you believe that such a problem can ____?
A. solve
B. be solving
C. is solved
D. be solved

20. The treasure must have ___.
A. be hidden
B. been hid
C. been hide
D. been hidden
21. Some products can hardly ____.
A. sell
B. B. to sell
C. be sold
D. be sell
22. Believing that the hope for cancer control ___ lie in the use of vaccine.
A. should
B. may
C. can
D. ought to
23. “Tomorrow is a fine day for fishing, we _____ go to the lake.”
A. should
B. may
C. must
D. have to
24. I ____ go home tonight because I ____ do a lot of work.
A. should/can’t
B. can’t/shall
C. can’t/have to
D. have to/ must
25. I met him yesterday, he was wearing a coat, it ____ have rained ealier.
A. should
B. may
C. must
D. have to

26. Knowing a cure ____ be made is an excellent piece of news.
A. should
B. may
C. must
D. can
27. My Dad work for the government, his job ____ be very tiring.
A. should
B. can
C. will
D. have to
28. The firm is recruiting new members, you ____ forget to apply.
A. shouldn’t
B. can’t
C. won’t
D. musn’t
29.You _____ be a victim of racism, you ____ report it.
A. should/might
B. can/might
C. might/should
D. have to/will
30. It’s 19:00, we ____ leave and head home, our families ____ be waiting.
A. should/could
B. can/might
C. might/should
D. have to/will