Question

【题目】Judy with her brother ________ computer games when their mother came back.

A. were playing B. are playing C. was playing D. is playing

Answer 1

【答案】C

【解析】句意：当他们的母亲进来的时候，Judy和她的弟弟正在玩电脑游戏。这里是when引导的时间状语从句，当某个动作发生的时候，某个动作正在进行，从句是一般过去时态，主句用过去进行时，其结构是be doing的形式，主语是Judy，with her brother在这里是介词短语做伴随状语，这里的be动词用was，根据题意，故选C。