environmental damage is done, it takes many years for the ecosystem to recover．A. Even ifB

发布时间：2020-08-29 22:35:16


    environmental damage is done, it takes many years for the ecosystem to recover．
A. Even if
B. If only
C. While
D. Once

网友回答

A. Even if
B. If only
C. While
(答案→)D. Once
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