从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1. —— Don’t forget to bring my new books tomorrow afternoon.
—— No, I＿＿＿＿＿＿＿.
A. don’t B. can’t C. won’t D. couldn’t
2. —— I hear you’ve got a set of Australian coins.＿＿＿I have a look?
—— Yes, certainly.
A. Do B. May C.Shall D. Should
3. He seldom listens to others. He＿＿＿＿＿answer for what he has done.
A. shall B. will C. can D. would
4. —— May I leave the office before 5 o’clock in the afternoon?
—— No, I’m afraid you＿＿＿＿＿＿＿.
A. needn’t B. shouldn’t C. mustn't D. won’t
5. —— Shall I tell John about it?
—— No, you＿＿＿＿. I don’t know his telephone number.
A. needn’t B. wouldn’t C. mustn’t D. shouldn’t
6. Mr Bush is on time for everything. How＿＿＿it be that he was late for the opening ceremony?
A. can B. should C. may D. must
7. The traffic light is red, so I＿＿＿＿＿＿stop my car.
A. must B. have to C. can D. mustn’t
8. —— What happened to the young trees we planted?
—— The trees＿＿＿＿＿＿well, but I didn’t water them.
A. might grow B. needn’t have grown
C. would grow D. would have grown
9. I was really anxious about you. You＿＿＿home without a word.
A. mustn’t leave B. shouldn’t have left
C. couldn’t have left D. needn’t leave
10. Children＿＿＿＿＿＿＿＿in public very often.
A. should be praised B. shouldn’t have praised
C. shouldn’t have been praised
D. shouldn’t be praised
11. Let’s clean the classroom, ＿＿＿＿＿＿＿?
A. won’t you B. shall we
C. do we D. will not you
12. Tom＿＿＿＿＿＿＿show his exam results to his parents.
A. dare not B. dared
C. dare to D. dares not to
13. I don’t think he＿＿＿＿＿＿＿ a new bike.
A. need to buy B. needs buy
C. need D. need buy
14. —— Nacy＿＿＿＿＿＿＿＿＿ the letter from her mother.
—— No, she can’t have. The postman hasn’t come yet.
A. can receive B. can have received
C. must have received D. must receive
15. She＿＿＿＿＿＿＿＿the film. She knows nothing about it.
A. can’t see B. can’t have seen
C. must see D. mustn’t have seen
16. They must have been here the day before yesterday,＿＿＿＿?
A. mustn’t they B. didn’t they
C. mustn’t have they D. had they
17. —— I didn’t see her yesterday.
—— Oh, but you ＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿.
A. must have B. ought to
C. should have D. cannot have
18. —— Must I take a bus ?
—— No, you＿＿＿＿. You can walk from here.
A. must not B. don’t
C. don’t have to D. had better not to
19. —— Why do you make me do so?
—— I am sorry that you＿＿＿＿＿＿＿＿do such a thing.
A. would B. can C. should D. may
20. —— Will you stay for lunch?
—— Sorry, ＿＿＿＿＿. My brother is coming to see me.
A. I mustn’t B. I can’t
C. I needn’t D. ?won’t
21. What would have happened＿＿＿＿, as far as the river bank?
A. if Bob has walked farther
