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【题目】—There were already five people in the car but they managed to take me as well.

—It _______ a comfortable journey.

A. can’t be B. shouldn’t be

C. mustn’t have been D. couldn’t have been

【答案】D

【解析】句意:--车里已经有五个人了,但是他们还设法带着我。--它不可能是一次舒适的旅行。A. can’t be不可能是,是对现在的推测; B. shouldn’t be不应该是,是对现在的推测。根据第一句可知,这里的旅行发生在过去,所以对现在的推测的选项是不正确的,故排除AB;

must have done“一定做过某事表示对过去的推测,不能用于否定句,故排除C;D. couldn’t have been表示对过去的推测过去不可能是”。故选D。

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