题目内容

I ________ my homework while my parents ________ TV at 9 last night.
A.did; have watchedB.had done; were watching
C.was doing; were watchingD.would do; were watching
C

试题分析:句意:昨天晚上九点钟当我父母看电视时,我在做作业。过去进行时表示过去某一时刻正在发生和进行的动作;故选C。
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