A. sure
B. right
C. exact
D. certain
22. You will never guess whom I _________ on the street yesterday.
A. ran over
B. ran out of
C. ran into
D. ran up to
23. I don't think it is any use _________ this matter any further.
A. discussing
B. to discuss
C. to discussing
D. to be discussed
24. In short，_________ he lives，a man belongs to some society.
A. whatever
B. whenever
C. whichever
D. wherever
25. Judging from his manners at the party，he doesn't seem _________ much education.
A. to receive
B. to be receiving
C. to have received
D. to have been received
26. Our children and grandchildren will _________ if we don't look after our pla.
A. endure
B. suffer
C. tolerate D. bear
27. The news of the air crash is not yet _________ by the government.
A. mitted
B. confirmed
C. considered
D. concerned
28. You ought to know better than _________ yourself in unnecessary expense
A. to involve
B. involve
C. involving
D. involved
29. She walked across the meeting room _________ every one looking at her.
A. with
B. as
C. while
D. when
30. No sooner had we sat down _________ we found it was time to go.
A. than
B. when
C. as
D. while
参考答案：
21—25 DCADC 26—30 BBAAA
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