Question

【题目】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

Answer 1

【答案】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。