2 . 选词填空
1. He ____________(must/might) get here in time,   but I can’t be sure.
2. —How long ____________(may/must) I keep this book?
—You may keep it for two weeks.
3. He ____________ (can’t/mustn’t) have missed the train;   he arrived at the train station two hours early.
4. John, look at the time. ____________ (Must/Can) you play the piano at such a late hour?
5. She ____________(might/must) have achieved greater progress,   if you had given her more chances.
6. —That must be a mistake.
—No, it ____________ (can’t/mustn’t) be a mistake.
7. Paul did a great job in the speech contest. He ____________(must/can)have practised many times last week.
8. It is usually warm in my hometown in March, but it ____________(may/can)be rather cold sometimes.
9. I can make a lantern now,   but I ____________(can’t/couldn’t)when I was young.
10. —Can we go out and play football now?   
—No,   you ____________(can’t/mightn’t).

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 . 用can或must填空
1. My phone ________have been stolen while I was taking a bus. I can't find it anywhere.
2. I'm hungry. I ________eat two bowls of rice now.
3. You not ________touch other people's head in this country as it will, according to local people, bring had luck to both of you.
4. —Why________ you stay in the countryside where it's not convenient to go shopping?
—Because I've found it beneficial to my health.
5. As far as I am concerned, the air crash ________not have been caused by a bomb attack.
6. You________ not be tired—you've only been working for ten minutes.
7. It is usually warm in my hometown in March, but it________ be rather cold sometimes.
8. Many rare animals are dying out. We________ find ways to protect our environment.

6 . 选择适当的短语填空。

lies in        rise to          make a difference     as a result of   looking forward to stick to       take on        on the rocks             smooth out     through thick and thin

1. You may wonder if one person can ________ to his family, to his community and to his country.
2. The strength of the book ________ the fact that the material is from classroom experience.
3. Unfortunately, Mr. Jones’ business and marriage were both ________.
4. The two countries are working hard to ________ their disagreements.
5. He was out of work for three months ________ the accident.
6. I am ________ visiting my family this Christmas—I haven’t been home for the holidays in years!
7. We’ve been together ________ and we won’t leave each other now.
8. It’s not an easy task, but I’m sure John will ________ the challenge.
9. If you want to realize your dream, you’ve got to ________ it and work hard at it.
10. Words ________ new meanings all the time.

7 . 选词填空

can, could, may, might, must（包含其否定形式）

1. Helen ________ go on a trip with us, but she isn’t quite sure.
2. My sister met him at the theatre last night, so he ________ have attended your lecture.
3. —I am sure I saw Brian in the park this morning.
—You ________ be imagining things. He left for America last night.
4. —Is John coming by bus?
—Not sure. He should, but he ________. He likes riding his bike.
5. —Isn’t that your teacher over there?
—No, it ________ be him. I'm sure he doesn’t wear glasses.
6. I saw him just now, so he ________ have gone abroad.
7. We ________ have faced the difficulty together, but why didn’t you tell me?
8. —What has happened to George? He hasn’t turned up so far.
—I don’t know. He ________ have got lost in the woods.
9. —She looks very happy. She ________ have passed the exam.
—I guess so. It’s not difficult after all.
10. For example, you ________ want to be a pilot but ________ become one because your eyesight is not good enough.