Why did they keep trying _________ they must have known it was hopeless?A.ifB.be
题型:不详难度:来源:
Why did they keep trying _________ they must have known it was hopeless?A.if | B.because | C.when | D.whether |
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答案
C |
解析
这题考查连词的用法,when表示“既然”句意是:既然他们已经知道是无望了,为什么还要一直尝试呢?选C。 |
举一反三
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