16. It wasn’t such a good present _____ he had promised me.
A. that B. as
C. which D. what
17. Perhaps the day will come _____ people will be able to breathe clean air in cities.
A. when B. while
C. as D. since
18. To make up an objective test, the teacher writes a series of questions, _____ has only one correct answer.
A. each of which B. some of which
C. which D. what
19. A higher crime rate exists in cities _____ a large percentage of unemployment.
A. where have B. that have
C. which they have D. that having
20. Scientists call Newton’s idea _____ gravitation reaches throughout the universe the law of universal gravitation.
A. when B. which
C. that D. where
21. The person _____ you were talking to was an American.
A. who B. whom
C. which D. as
22. All _____ is a continuous supply of the basic necessities of life.
A. what is needed B. that is needed
C. for our needs D. thing needed
23. The goals _____ he had fought all his life no longer seemed important to him.
A. for that B. for which
C. for what D. of them
24. Snowdonia is a seashore city _____ you can enjoy yourselves much by visiting the local scenic spots.
A. why B. which
C. where D. so
25. The inflation made it hard for us to buy the necessities ____.
A. which need us B. that we need
C. what we need D. as we need
26. Those were the soldiers _____ to save the town.
A. whose responsibility was B. in whom there was a responsibility
C. whose was the responsibility D. from whom the responsibility
27. It won’t be long _____ the modern communications spread over all the villages in china.
A. when B. before
C. until D. as
28. The fact _____ doctors recommend that children with hypertension(过度紧张)drink coffee is surprising.
A. what B. is that
C. that D. of
29. I can never forget the day _____ I first came to college.
A. when B. in which
C. at which D. which
30. I can never forget the day _____ we spent together.
A. when B. in which
C. at which D. which
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