问题补充:
Air pollution is getting more and more serious, so we must take action it is too late.
A. before
B. after
C. until
D. when
答案:
(答案→)A. before
B. after
C. until
D. when
解析:选A考查状语从句。句意:空气污染越来越严重,所以我们必须趁现在还来得及的时候采取行动。根据句意可知,应用before,表示“在……以前”。
时间:2022-06-10 20:17:30
Air pollution is getting more and more serious, so we must take action it is too late.
A. before
B. after
C. until
D. when
(答案→)A. before
B. after
C. until
D. when
解析:选A考查状语从句。句意:空气污染越来越严重,所以我们必须趁现在还来得及的时候采取行动。根据句意可知,应用before,表示“在……以前”。
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