题目内容
By time they got to the airport, the plane .
A. took off B. has taken off
C. had taken off D. was talking off
C
【解析】
试题分析:句意:当他们到达机场时,飞机已经起飞。根据时间状语By time they got to the airport可知主句动作发生在前,从句动作发生在后,而从句用的是一般过去时,所以主句该用过去完成时。因此选C。
考点:考查动词时态。
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