1 . —Is Lucy knocking at the door?
—No. It ______ be Lucy. She is in France now.

A．mustn’t

B．can’t

C．needn’t

D．shouldn’t

2 . -- Is Lucy knocking at the door?
-- No. It ______ be Lucy. She is in France now.

A．needn't

B．can't

C．mustn't

D．daren't

3 . It ________ be the postman at the door. It’s only six o'clock. (根据句意填空)

4 . It was very dangerous because if I was caught______________________ (我可能要坐牢)．(prison)

5 . They believed God had made the world and the earth must be the centre of the solar system.
那不可能是解决问题的唯一办法，肯定有另外的办法。(汉译英）

6 . You don’t have to know the name of the author to find a book. You _____ find the book by the title.

A．must

B．need

C．can

D．would

7 . 没有空气人就不能生存。
People ____live ____air.

8 . There is no light in Smith’s room. Therefore, he ________ be at home.

A．wouldn’t

B．mustn’t

C．shouldn’t

D．can’t

9 . 语法填空
1. Sometimes chopsticks are quite artistic. Truly elegant chopsticks might________(make) of gold and silver with Chinese characters.
2. When I was small, my mom ________ read me stories at night．
3. The accident ________ have been caused by a dog running across the road, but we don't know for sure．
4. He looked so hungry as though he ________ (eat) a decent meal for a month．
5. I was caught in a traffic jam for over an hour, otherwise, I ________ (keep) you waiting for such a long time．
6. Although passing the driving test ________ be difficult now, it's worth the efforts．
7. My mother ________ (be) angry with me, but I couldn't shut my mouth before I shouted at her!
8. I'm not sure of the reason for the dog's illness, but it ________ (cause) by eating too much．
9. —Can I pay the bill by check?
—Sorry, sir． But it is the rule of our hotel that payment ________ be made in cash．
10. Passengers ________ talk to the driver while the bus is moving, because it will take his focus off the road．

10 . 改错
1. As the kid, I loved to watch cartoons, but no matter how many times I asked to watching them, my parents would not to let me.
2. Some classmates suggest we can go to places of interest nearby.
3. He mustn't be a basketball player, because he is much too short．
4. Robert's new book about space exploration is fantastic． You simply could read it．
5. Has he learnt about computer, we would have hired him to work here．
6. If we   booked a table earlier, we wouldn't be standing here in a queue．
7. All of us love the weekends, because we can't get up early on Saturdays and Sundays．
8. He might have gone to bed, for the light was out．
9. He commanded that roads built to link castles across the land．
10. We must go to the concert tonight, but we are not sure yet．