We were swimming in the lake suddenly the storm started.A. when B. whileC. untilD. before

发布时间：2020-08-17 00:09:52

We were swimming in the lake      suddenly the storm started.
A. when
B. while
C. until
D. before

网友回答

(答案→)A. when
B. while
C. until
D. before
解析：考查固定句型。固定句型:be doing sth when…正在做某事在这时…when后面的句子指发生了意料之外的事情。When是一个并列连词，意为“在这时”。句意：我们正在湖里游泳，在这时突然下起了大暴雨。故A正确。
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