Question

【题目】My mother was doing the cleaning in the sitting room ________ the telephone rang.

A. when B. while C. since D. as soon as

Answer 1

【答案】A

【解析】

试题分析：句意：妈妈正在起居室清整卫生，突然电话铃响了。此题考查某人正在做某事，突然……用连词when，故选A。