1 . 选词填空。
1. My mother is ill, so I ________(have to/ must)stay home to look after her.
2. He ________(can’t/ mustn’t)be Tom. Tom has gone to London, you know.
3. It’s dark outside. Besides, it’s raining heavily. So, you ________(had better/ might)go home with me.
4. In today’s information age, the loss of data ________(can/must)cause serious problems for a company.
5. It’s strange that he ________(should/ must)have taken the books without the owner’s permission.
6. Samuel, the tallest boy in our class, ________(can/should)easily reach the books on the top shelf.
7. My room is in a mess, but I ________(needn’t/ shouldn’t)clean it before I go out tonight. I can do it in the morning.

2 . 选词填空。
1. Robert is good at languages and ________(can/must) speak four languages.
2. The meeting is very important and you________(would/should) attend it on schedule.
3. I managed to find the street, but I ________(couldn’t/mustn’t) find her house.
4. Every Sunday afternoon, the boy ________(will/may) sit there hour after hour looking at the traffic go by.
5. In his childhood, Jack ________(would/could) be nervous when he met strangers.
6. —Do you have any plan for this weekend?
—I have not decided yet. I________(may/need) take my daughter to the museum.
7. According to the doctor’s advice, the medicine________(might/must) be taken three times a day.
8. No one ________(shall/must) stop us from carrying out the plan.
9. Rose ________(can’t/needn’t) be in the classroom now, because I saw her leave school several minutes ago.
10. Jane asked whether she________(must/could) sit in the empty seat.
11. One of the windows of the classroom ________(won’t/mustn’t) close, so I’ll have it repaired.
12. The headteacher warned him not to be late for school, but Jack ________(wouldn’t/shouldn’t) listen.

3 . 选词填空。
1. He ________(must/might) get here in time ,but I can’t be sure.
2. He ________(can’t/mustn’t) have missed the train; he arrrived at the train station two hours early.
3. That must be a mistake. No, it ________(can’t/mustn’t) be a mistake.
4. Paul did a great job in the speech contest. He ________(must/can) have practised many times last week.
5. He ________(may/must) be at his office now, but you’d better make a phone to make sure.
6. Look, someone’s in the room. Who ________(can/must) it be ?
7. It ________(must have /may have) rained last night, for the ground is still wet.
8. I don’t know where she is, she ________(may/must) be in Wuhan.
9. With drones’ ability to see ahead, they ________(could/should ) signal any problem, so that fast -moving trains would be able to react in time.
10. I ________(needn’t/can’t) have bought so much wine -only two people came.

4 . 选择适当的情态动词或用所给动词的正确形式填空

must, could, can, might, may, mustn’t, couldn’t, can’t, mightn’t, may not

1. It ________ rain this afternoon. You’d better take a raincoat with you.
2. Betty ________ be in the next room. I can hear her talking there.
3. ---_________he be in the reading room now?
---No, he ________ be in it. I saw him in the office just now.
4. I ________ carry the heavy box. ________ you lend me a hand?
5. You ________ stop your car in the busy street. It is forbidden.
6. I ________ play basketball now, but I _________(not) when I was young.
7. All the students ________ obey the school rules.
8. He ________ (not) go camping with us this weekend. I’m not sure.
9. Her eyes are red. She ________ (be) crying last night.
10. You ________ (see) the famous film Wolf Warrior II as you know so much about the plot.

5 . 选用适当的单词或短语补全对话

may/must/ should/can/ be able to/have to

June: Excuse me,     1     I use your computer for a while?
Melissa: Yes, you     2    . But it is not connected to the Internet, so if you want to check your e-mail, you won’t     3    
June: Then I’ll     4     find another one, but thank you anyway.