2 . —Listen! Who is knocking at the door?_______ it be Alice?
—No, Alice has gone to town. It ________be Mary.（may/can）（用适当的词填空）

5 . Just be patient. You__________count on your English improving significantly in just two weeks.

6 . 他现在不可能在睡觉，因为我刚听到他在打电话。
He ________________ now, for I just heard him telephoning.   ( sleep )

7 . 单句改错（每题只有一处错）
增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
1. Every time when I see the photos, it will remind me of my childhood.
2. Jane mustn’t have stolen your money. She is an honest girl.
3. I took an airplane the first time when I was only 4 years old.
4. Although they aren’t studying in the same school now, they still keep in a contact with each other.
5. If the interviewer gives me the second chance, I will definitely do a better job.
6. He used to doing exercise every day, but now he doesn’t, so that he puts on weight.
7. This matter is so important that you should take it serious.
8. The scientist whom gave us a lecture is a professor in Peking university.
9. It has been ten years since I graduate from university.
10. The millionaire has spent a large amount of money in charity since he was young.

8 . Imitating others’ actions in Tik Tok _____ be very dangerous, so you ____ be too careful.

A．should; ought to

B．could;     should

C．might;   mustn’t

D．can;   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．