The doorkeeper gave the alarm he saw the smoke.A. whileB. the instantC. suddenlyD. before

发布时间：2020-08-16 12:02:24


The doorkeeper gave the alarm      he saw the smoke.
A. while
B. the instant
C. suddenly
D. before

网友回答

A. while
(答案→)B. the instant
C. suddenly
D. before
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