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we must take some measures to prevent the environment being poll. 改为被动.速度,急.考试中.

分类: 作业答案 • 2022-09-25 22:06:58

问题描述：

we must take some measures to prevent the environment being poll. 改为被动.速度,急.考试中.

答

Some measures must be taken to prevent the environment being poll.