1 . 用方框内短语的适当形式填空

can，could，may，might，must

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?
—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.

2 . 短语填空

feel like, have an urge to, turn out, draw a breath, push through, due to, again and again

1. The chances are that this book may _____to be the bestseller of our time.
2. Would you _____coming along with us to the concert this Sunday?
3. My brother _____,determined that he would go on climbing.
4. The crowd in Quancheng Square was so thick that he had to _____.
5. The town was cut off from the rest of the world _____the heavy snow.
6. The vacation is coming and I _____travel around the world.
7. Mr Brown was careful and would go over his work _____until he felt he had it right.

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 . 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.