题目列表(包括答案和解析)
20.According to a new study by a British university, learning second language can lead to
increase in your brain power.
A.a ;the B.不填; the C.a ;an D.the ;不填
19.-Has he finished writing his essay?
-No. He on it when I went to see him this morning.
A.worked B.was working C.had worked D.is working
18.Finding her car stolen, .
A.a policeman was asked to help B.the area was searched thoroughly
C.it was looked for everywhere D.she hurried to a policeman for help
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