19．We’d better set off now, or it will be darkwe know it.A. untilB. afterC. whenD. Before

发布时间：2020-08-16 06:42:30

 
19．We’d better set off now, or it will be dark    we know it.
A. until
B. after
C. when
D. Before

网友回答

A. until
B. after
C. when
(答案→)D. Before
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