76. All flights called off because of the terrible weather, they had to go there by train

发布时间：2020-08-16 07:01:19


76. All flights      called off because of the terrible weather, they had to go there by train.
A. were
B. had been
C. being
D. having been

网友回答

A. were
B. had been
C. being
(答案→)D. having been
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