题目内容
The earthquake ______ when I _______some cleaning.
A.starts, was doing | B.started, was doing |
C.was starting, was doing | D.starts, were doing |
B
解析试题分析:句意:当我正在打扫房间的时候地震开始了。根据句意可知when 引导的时间状语从句中的动作是正在进行的,第一空应该用一般过去时,表示发生在过去的一个动作。故选B。
考点:考查动词时态。
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