The fleet made several expeditions the exploration was stopped.A. whenB. beforeC. whileD.

发布时间：2020-08-16 18:43:39

The fleet made several expeditions      the exploration was stopped.
A. when
B. before
C. while
D. since

网友回答

A. when
(答案→)B. before
C. while
D. since
解析：考查连词，A. when当…时候，B. before在…之前，翻译时可以做为：…才， C. while当…时候，然而D. since自从，句意是：船队进行了几次短途旅行之后，探险才结束。选B。
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