练习、助动词与情态动词

　　1. If they _________ to do this work, he might do it some other way.

　　 A. were B. should C. will D. can

　　2. I was told yesterday that the company _________ me to Rome next week for a business conference.

　　 A. should have sent B. were going to send C. should be sending D. should send

　　3. Lets take a walk, ________? A. will we B. dont we C. do we D. shall we

　　4. He was a good swimmer so he _________ swim to the river bank when the boat sank.

　　 A. could B. might C. should D. was able to

　　5. I went to the doctors yesterday, I had to wait for half an hour before he ________ see me.

　　 A. can B. may C. might D. could

　　6. ---- _________ this book be yours? ---- No, it ________ not be mine. It ________ be his.

　　 A. Can, must, may B. May, might, must C. Can, may, must D. Must, can, may

　　7. We didnt see him at the lecture yesterday. He _________ it.

　　 A. mustnt attend B. cant have attended C. would have not attended D. needed have attended

　　8. They _________ the plane, or perhaps they have been prevented from coming for some reason.

　　 A. can have missed B. may have missed C. can have lost D. may have lost

　　9. Since the ground is white, it _________ last night.

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