专项练习
一、单项选择。
(　　　)1. —______ I speak to Mary? —Yes, speaking.
　　　　
A. Must B. Do C. May
(　　　)2. This Maths problem is too hard. Nobody ______ solve it.
　　　　
A. may not B. may C. can
(　　　)3. —Can you speak Japanese? —No, I ______.
　　　　
A. can't B. mustn't C. may not
(　　　)4. The children ______ be careful because the floor is wet.
　　　　
A. must B. can C. need
(　　　)5. —Must we finish all these articles this morning? —No, you ______.
　　　　
A. mustn't B. haven't C. don't have to
(　　　)6. You ______ go and see a doctor at once because you've got a high fever.
　　　　
A. can't B. must C. could

一、1.C　2.C　3.A　4.A　5.C　6.B

二、按要求完成句子。
1. We must look left and right first.(对画线部分提问)
　______ ______ you do first?
2. He could have some hamburgers.(改为否定句)
　He ______ ______ ______ hamburgers.
3. Lucy must go to bed now.(改为一般疑问句)
　______ Lucy ______ to bed now?
4. We can go to the museum by metro.(对画线部分提问)
　______ ______ you ______ to the museum?
5. You must read this notice now.(改为一般疑问句，并作肯定和否定回答)
　______ ______ read this notice now?
　肯定回答：______, ______ ______. 否定回答：______, ______ ______.

二、1.What must　2.couldn't have any
3.Must; go　4.How can; go
5.Must I/we; Yes; you must; No; you needn't

三、根据中文意思，补全句子或对话。
1. 我可以为你做些什么？
　______ ______ I do for you?
2. ——你弟弟会看报纸吗？ ——不，他不会。
　—______ your brother ______ ______?
　—No, he ______.
3. ——为了保持房间干净，你们可以做什么？ ——我们可以将所有玩具摆放得井井有条。
　—______ ______ the room ______, what ______ you do?
　—We ______ ______ all the toys ______ ______.

三、1.What can　2.Can; read newspapers; can't
3.To keep; clean; can; can put; in order