1 . —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）

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

3 . 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．

4 . 单句语法填空
1. When he was there, he__________go to that coffee shop at the street corner after work every day.
2. —Take a taxi;__________you won’t get the airport in time.
—OK, I will. See you!
3. Just be patient. You__________count on your English improving significantly in just two weeks.
4. __________you succeed in passing the college entrance examination!
5. The date of the wedding needs__________(determine) in advance so that we can invite our guests.
6. If you need help — money or anything, let me know,__________you?
7. Their plan__________(approve); otherwise they wouldn’t have begun their work.
8. “You__________have a wrong number,” she said. “There’s no one of that name here.”
9. I__________(will) allow my children to come back late. It’s too dangerous.
10. —How’s your new babysitter?
—We__________(ask) for a better one. All our kids love her so much.

5 . 用适当的情态动词填空
（1）—Excuse me. Is this the right way to the Summer Palace?
—Sorry, I'm not sure. But it ____________be.
（2）—Do you know where David is? I couldn't find him anywhere.
—Well, he ____________have gone far - his coat's still here.
（3）Mr. Bush is on time for everything. How ____________it be that he was late for the important meeting?
（4）He ____________ have completed his work; otherwise,he wouldn't be enjoying himself by the seaside.
（5）Look!The light in the office is still on. Our English teacher ____________be correcting our exam papers.