He was on the point of setting off for Shanghai his girl friend called him.A. when B. while C. as D.

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编辑：chaxungu时间：2026-04-27 02:53:19分类：高中英语题库

【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

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【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。