environmental damage system

Once environmental damage ______, it takes many years for the system to recover.

发布于 2023-09-26 09:26:40

Once environmental damage ______, it takes many years for the system to recover.

A.is to do

B.does

C.had done

D.is done

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爱翻译 认证专家 2023-10-22

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　　答案:D.is done

　　解析：“环境破坏”和“做”之间是被动关系，所以用被动语态，填is done。

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