The building required by the end of the year.A. to pull downB. pulling downC. being pulled

发布时间：2020-08-16 19:45:06

The building required     by the end of the year.
A. to pull down
B. pulling down
C. being pulled down
D. pulled down

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A. to pull down
(答案→)B. pulling down
C. being pulled down
D. pulled down
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