【题目】—All the containers have been unloaded! Can it have been done by Frank?
—Impossible! He ________ his car last night.
A. has fixed B. had fixed C. would fix D. was fixing
在线课程【答案】D
【解析】考查谓语动词的时态。句意：——所有集装箱都已卸下！这是弗兰克做的吗？——不可能！昨天晚上（那个时候）他在修汽车。根据前面的Impossible可知，是说昨天卸集装箱时他正在修汽车，表示在过去的某个时间正在进行的动作，故用过去进行时。故选D。