We were swimming in the lakesuddenly the storm started.A. whenB. whileC. untilD. before

发布时间：2020-08-17 13:41:20

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：when 在句中是并列连词，作“正当这时”解，相当于at that time (suddenly)。
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