We were about to start out our friends called us up from Shanghai.A. whenB. whileC. untilD

发布时间：2020-08-17 04:59:44

We were about to start out     our friends called us up from Shanghai.
A. when
B. while
C. until
D. before

网友回答

(答案→)A. when
B. while
C. until
D. before
解析：考查连词：be about to do常和when连用，表示“刚要做…这时…”,句意：我们刚要出发，这时朋友从上海打电话给我们。选A。
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