Now there is a danger the ground may fall in under the heavy traffic.A. whether B. if C.

发布时间：2020-08-16 07:40:39

Now there is a danger      the ground may fall in under the heavy traffic.
A. whether
B. if
C. X
D. that

网友回答

A. whether
B. if
C. X
(答案→)D. that
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