题目内容
By the time they arrived at the station, the train .
A.will leave | B.would leave |
C.has left | D.had left |
D
试题分析:句意:到他们到达火车站是,火车已经离开了。根据By the time they arrived at the station,可知到达这个动作发生在过去,火车离开是在他们到达之前,故用过去完成时。故选D。
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