Question

【题目】When I came back home, my mother dinner.

A.cooksB.is cookingC.was cookingD.have cooked

Answer 1

【答案】C

【解析】

句意：当我回家时，妈妈正在做完饭。

考查时态。A. cooks做饭，一般现在时；B. is cooking做饭，现在进行时；C. was cooking做饭，过去进行时；D. have cooked做饭，现在完成时。根据时间状语When I came back home，可知动作发生在过去的某个时刻，主句动词应该用过去进行时，故选C。