Question

【题目】My mother some washing when the telephone rang.

A. does B. did C. is doing D. was doing

Answer 1

【答案】D

【解析】句意：电话铃响时，我妈妈正在洗衣服。考查动词时态。根据when当…的时候，它引导的时间状语从句，从句一般用一般时态，主句用进行时态。本句从句用一般过去式，从句要用过去进行时态。结合句意和语境可知选D。