101. It was imperative that students _____ （finish） their papers before July 1st.

102. It is high time that we _____ （take） firm measures to protect our environment.

103. Had he been treated well， he _____ （get over） this disease.

104. If only the board _____ （approve） the proposal and put it into effect.

105. If thalidomide _____ （invent） today， it would never be released for human use because new tests on pregnant animals would reveal the dangers.

106. He _________（write） her 10 letters since he met her last years.

107. I think it necessary for him ________ （finish） the work in time.

108. The house is ______ （complete） before his brother's wedding ceremony.

109. You had better ________ （bring） enough money with you.

110. If I hadn't listened to you， I would _______ （make） such a silly mistake.

111. The three players repeatedly denied ________ （take） any drug.

112. People who are entitled to ________ （vote） should be over eighteen.

113. If she ______（catch） the 10 O'clock train， she can get there by lunch time.

2. 从句

――――定语从句，名词从句和状语从句

1.It was there， the police believe， _____ she was able to activate the recorder she kept in her bag.

A. until B. which C. that D. when

2.It is not yet known _____ computers will one day have vision as good as human vision.

A. whether B. if C. that D. how

3.Such attitudes amount to a belief _____ leisure can and should be put to good use.

A. which B. if C. whether D. that

4. Many of us visited the industrial exhibition，____， to our disappointment， we saw very few high-tech （高技术） products.

A. where B. which C. as D. that

5. On the other hand concern is also growing about the possibility of a new economic order _____ resource-rich nations of the Third World would combine to set high commodity prices.

A. which B. what C. that D. in that

6.Studies have shown _____ teenagers often suffer from depression.

A. that B. which C .in which D. in that

7. It is becoming increasingly clear to policy-makers schools cannot solve all the problems of the larger community.

A. that B. what C. when D. who

9. There is no doubt _____ a large number of people have benefited from heart surgery.

A. what B. of C. if D. that

10. Such people _____ you describe are nowadays.

A. as B. that C. who D. which

11. Was it in that school _____ he developed his interest in physics？

A. which B. from which C. where D. that

12. Why do you blame him for his poor judgment on the matter _____ he really needs is encouragement？

A. when that B. since that C. when what D. now that

13. _____， I couldn't get a job in this company.

A. Try as I might B. As I might try C. Try though I might D. I might try

14. It is a well-known fact ____ a person will move in a circle when he cannot use his eyes to control his direction.

A. that B. if C. when D. whether

15. Very few people understood this contract， _____was very obscure.

A. the language B. the language of which C. all it said D. which it had said

16. Management often works hard to set up a situation _____work is done in series.

A. that B. where C. which D. what

17. Although Tom is satisfied with his academic achievement， he wonders ____will happen to his family life.

A. it B. that C. what D. this

18. We cannot leave this tough job to a person _____.

A. who nobody has confidence B. in whom nobody has confidence

C. for whom nobody has confidence D. who everyone has confidence of

19. Six out of every ten prisoners in chains are black， which is _____ the chain gangs call up images of slavery in centuries gone by.

A. where B. when C. what D. why

20.Robots differ from automatic machines _____ after completion of one specific task， they can be reprogrammed by a computer to do another one.

A. so that B. in which C. given that D. in that

21. His name will be crossed out from the list _____ he makes the same mistake again.

A. if B. unless C. because D. though

22. Five minutes earlier， _____we may have caught the gunman.

A. and B. but C. or D. so