1. It was not ____ midnight that they discovered the children were not in their beds.
A. beforeB. at C. after D. until
2. We shall ask for samples ____ and then we can make our decision.
A. to be sent B. being sentC. to sent D. to have been sent
3. I can t find the recorder in the room. It ___ by somebody.
A. must have taken B. may have taken C. may have been taken D. should have been taken
4. We ll be only too glad to atten your party ______ we can get a baby-sitter.
A. so far as B. provided that C. unlessD. except that
5. The old gentleman never fails to help ______ is in need of his help.
A. whomB. who C. whoever D. whomever
6. ______ under a microscope, a fresh snowflake has a delicate six-pointed shape.
A. Seeing B. SeenC. To see D. To be seen
7. When are you going to visit your uncle in Chicago?
As soon as ______ our work for tomorrow.
A. were complete B. wed completeC. well complete D. we complete
8. Neither John nor I ______ able to persuade Richard s grandfather to attend the wedding.
A. am B. areC. are to be D. is
9. You ought ______ the matter to the mamager the day before yesterday.
A. to reportB. to have reportedC. to reporting D. have reported
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