As we know,air pollution is harmful to people's health.① As we know. air pollution people's health.② As we know. air pollution people's health. 题目和参考答案——青夏教育精英家教网—

题目内容

1. As we know,air pollution is harmful to people's health.(改为同义句）

① As we know， air pollution people's health.

② As we know， air pollution people's health.

1. does harm to;harms

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