(注：对号"√"表示其后选项为正确答案)
1. no electronic computers , they could have been no satellites orrockets.
√A. Had there been B. If there were
C. Should there be D. If there are
省略if的倒装;
2. Hardly had Professor Birch finished his speech the audiences started cheering.
A. as B. that C. since √D. when
否定词前置的倒装，如hardly , never , on no account , scarcely ,
in no case , no sooner , not until , not only , rarely , seldom , little 等;
3. Never such a marvelous place as the Great Wall before I got there.
A. did I see B. I had seen C. I saw √D. had I seen
4. On no account there.
A. you should go B. you must go
C. had you to go √D. must you go
5. ,Sam would have been able to pass the exam.
A. If he studies more B. If he were studying to a greater degree
C. Studying more √D. Had he studies more
6. Scarcely had they settled themselves in their seats in the theater the curtain went up.
A. than B. before √C. when D. as
7. In no case indicate any depgree of difference in the legal status of
husband and wife.
A. the documents will B. will be documents
C. the documents should √D. do the documents
8. had he gone to sleep that the telephone rang once more.
A. As soon as √B. No sooner C. Hardly D. Scarcely
9. a certain doubt among the students as to the necessity of the work.
A. It existed √B. There existed C. They had D. There had
10. Not until the year of 1954 made the capital of this province.
A. the city was √B. was the city
B. C. when the city was D. was when the city
11. He will not be to vote in this year's election.
√A. old enough B. as old enough C. enough old D. enough old as
12. Were it not for friction, we to walk on this planet of our own.
√A. would not be able B. should not have been able
C. were not able D. are not able
13. will Mr. Forbes be able to regain control of the company.
A. With hard work B. In spite of his hard work
C. Only if he works hardly √D. Only with hard work
某些副词置前要倒装，如only , so , then ; only在修饰状语时才倒装;
