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单选题 专四
2010-11-28

I went there in 1984, and that was the only occasion when I __ the journey in exactly two days.

A.must make
B.must have made
C.was able to make
D.could make

参考答案

C

答案解析

【译文】我l984年去了那里,那也是我唯一一次有机会能够刚好在两天内完成旅行。
情态动词的含义和用法。本句是陈述过去事实,而A.must多指现在或将来的情况,一般不用来表示过去必须做某事,据此排除。B.must have done sth.表示对过去行为的推测、猜想,不一定是事实,与句意不符。D.could指“一般的能力”,通常不表示某人在某一场合设法做了某事,故不正确。C.was able to专用于过去的具体场合,尤其指“具有能力完成某件有难度的事情”,因此C是正确答案。

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