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”。
如果觉得《Air pollution is getting more and more serious so we must take action it is too late.A.》对你有帮助,请点赞、收藏,并留下你的观点哦!