题目内容
I _____ my homework while my parents _____ TV last night.
A. did; have watched B. was doing; were watching
C. am doing; were watching D. would do; were watching
B 【解析】试题分析:句意:昨天晚上当我的父母在看电视时,我正在做作业。While后的从句只能用延续性动词,且强调主从句的两个动作同时发生。故选B。
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