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1. Lots of empty beer bottles were found under the young man\'s bed; he __________ heavily.
A. must have drunk B. must drink C. should drink D. had to drink
2. __________ home, she found that she had left the key at the office.
A. To have arrived B. To arrive C. While arriving D. Arriving
3.In deciding __________ a course of action, the candidates tried to estimate its likely impact on the voters.
A. what to pursue B. which to pursue C. whether to pursue D. if to pursue
4. __________, they began to get down to business.
A. The holidays are over B. The holidays were over
C. The holidays being over D. The holidays had been over
5. __________ nothing to say，the boy shied way from the crowd.
A. Have B. Having C. Had D. Having being
6. The young doctor could not sleep at night, the worsening condition of a patient __________ him.
A. disturbing B. disturbed C. being disturbed D. to disturb
7. Should she come tomorrow, I __________ take her to the museum.
A. can B. will C. would D. must
8.If we __________ everything ready by now, we should be having a terrible time tomorrow.
A. hadn’t got B. didn’t get C. wouldn’t have got D. wouldn’t get
9. __________ for your help，I would not have over come the psychological pressures and tensions．
A. Not been B. Without being C. Had it not been D. Not having been
10.Would’t you rather your child __________ successful with his study and won the scholarship?
A. became B. become C. would become D. becomes
11.You needn't __________ him about this since he could find out for himself.
A. tell B. be telling C. have told D. have to tell
12. Much of the carbon in the earth __________（come）from things that once lived.
13. China is not what she __________（use）to be.
14. In the past two decades, research __________（expand）our knowledge about sleep and dreams.
15. Television ads __________ usually __________（repeat）over and over again.
16.Some proverbs __________ （be）in the language for 1,000 years, for example, A friend in need is a friend indeed.
17.The nations that __________ actively __________ （involve）in earthquake prediction programs include Japan, China, Russia, and the United States.
18.In 1991, after the Gulf War, Bush\'s approval rating reached 91 percent, the highest level recorded since polling __________（begin）in the 1930s.
19.Seeing violence on television or reading about it in the newspapers every day __________ （make）us tolerate crime more than we should.
20.All the worries they might have felt for him __________ (drive) off by the sight of his cheerful face.