题目内容
【题目】He was on the point of setting off for Shanghai ____ his girl friend called him.
A. when B. while C. as D. before
【答案】A
【解析】
试题分析：考查连词。句意：当她的女朋友打电话给他的时候，他正准备去上海，“当……的时候”用when，故选A。
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题目内容
【题目】He was on the point of setting off for Shanghai ____ his girl friend called him.
A. when B. while C. as D. before
【答案】A
【解析】
试题分析：考查连词。句意：当她的女朋友打电话给他的时候，他正准备去上海，“当……的时候”用when，故选A。