2 . 选用下列情态动词的恰当形式完成句子。(否定式写缩写)

1. ____________you continue in your efforts and achieve greater success.
2. When I was young, I was told that I ____________play with fire.
3. It ____________be Jack. He has gone to Shanghai.
4. I didn’t send out my application form last week, but I ____________have.
5. You   ____________have washed all those clothes! We have a washing machine to do that sort of thing.

3 . 选词填空

needn't,　　must,　　should,　　might,　　can't,　　may,　　can,　　could,　　will,　　would

1. He_____________have passed the exam; otherwise, he wouldn’t be so happy.
2. Tom_____________be watching TV now at home, for I saw him going shopping just now.
3. I_____________go on the trip with you, but I am not sure yet.
4. The film is so boring, and we_____________as well not go to see it.
5. The World Wide Web is sometimes jokingly called the world wide wait because it _____________be very slow sometimes.
6. It is known to us all that oil_____________float on water.
7. I_____________have come here in time, but I met an old friend of mine. I stopped and talked with him for some time.
8. You failed again; you _____________work hard from now on.
9. It is not cold today; I_____________have put on the coat.
10. When he was young, he _____________play football after school.

4 . 语法填空（用方框内所给情态动词完成下面的句子）

1. Why are there only 12 tickets left? There _____________be 15.
2. A well-trained person _____________hold his breath under water for more than two minutes.
3. What's the matter with my computer? It _____________not work!
4. The situation there was still unclear, and my son _____________be in trouble though I was not quite sure.
5. He _____________not be serious, but is just joking.
6. He _____________be sleeping in the dormitory. You can find him there.
7. The witness was under strict protection, and no one but the police _____________get close to him.
8. What _____________we do if we come across such a person?
9. Since you have finished your work, you _____________go now.
10. When the weather was fine, he_____________ keep his wife company along the river bank.

5 . 选择括号内适当的情态动词填空
1. — __________ (Must/Would) you come to chat with me when I’m very busy?
—Yes, I have something important to share with you.
2. —I promise her daughter __________ (shall/should) get a nice present on her birthday.
—Will it be a big surprise to her?
3. As you know, all passengers __________ (should/would) switch off their mobile phones when they are taking the plane.
4. It is usually warm in my hometown in March, but it __________ (should/can) be rather cold sometimes.
5. Now that he is here, you __________ (can/may) as well ask him for some advice-
6. According to the rules, applicants (申请人) __________ (must/can) have finished middle school.
7. —Shall I tell John about it?
—No, you __________ (needn’t/shouldn’t). I’ve told him already.
8. —That must be a mistake.
—No, it __________ (mustn’t/can’t) be a mistake.
9. —Must I take a bus to your home?
—No, you __________ (must not/don’t have to). It’s just a 5-minute walk from here.
10. He __________ (must/might) have passed the final examination; I was not sure.