The earthquake_______ when I_______ some cleaning in the Wap版

试题详情及答案解析

The earthquake_______ when I_______ some cleaning in the kitchen.

A．starts; was doing	B．started; was doing
C．was starting; was doing	D．starts; were doing

答案：B

试题分析：句意：当地震发生的时候，我正在厨房打扫卫生。地震发生时，应该用过去式started，我正在干什么，过去进行时，was donging sth.根据句意。故选B
考点：考查动词时态。