Bài 6: Chọn đáp án đúng:

1. They prayed that their daughter_____ be lucky again.

a. may          b. will                     c. could         d. might

2. He had to work hard so that he _____ his family.

a. may support         b. supported            c. can support          d. might support

3. They have plenty of time, so they need not_____

a. be hurry              b. to hurry               c. hurry                   d. to be hurry

4. You're having a sore throat. You should_____ to the doctor.

a. to go                    b. went                    c. go                       d. going

5. May I have 2 tickets, please? _____________ two tickets, please?

a. You must given me                  b. You have got to give me

c. Could I have                            d. You may give me

6. Do you have to buy this hat? No, I _____. It isn't necessary.

a. mustn't                b. won't                   c. needn't                d. don't need

7. The plane was then able to rise. This means it______

a. could rise            b. might rise            c. might succeed in rising                     d. rose

8. ______ run so fast?

a. Does he need       b. Need he to c. Need he               d. Needs he

9. Young people ______ obey their parents.

A. must                   B. may                    C. will          D. ought to

10. Laura, you and the kids just have dinner without waiting for me. I ______ work late today.

A. cannot                B. have to               C. could                  D. would

11. I ______ be delighted to show you round the factory.

A. ought to              B. would                 C. might                  D. can

12. Jenny’s engagement ring is enormous! It ______ have cost a fortune.

A. must                   B. might                  C. will          D. should

13. You ______ to write them today.

A. should                B. must                   C. had           D. ought

14. My grandparents live in the suburb. Therefore, whenever we visit them, we__________a bus.

A. must takes          B. should take         C. have to be taken  D. have to take

15. You__________eat plenty of fruit or vegetables every day because they are good for your health.

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

16. You__________use your mobile phone in the exam.

A. oughtn't to          B. mustn't                C. don't have to       D. shouldn't

17. I think you__________do exercise regularly in order to keep in shape.

A. must                   B. should                 C. ought to              D. B & C are correct

18. The children__________spend too much time watching TV.

A. mustn't               B. ought to not        C. shouldn't             D. B & C are correct