We must do something to____ the factories sending out poisonous

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1. (2024高一上·深圳期末) We must do something to____ the factories sending out poisonous gases so as to keep the city____.

A . keep; being polluted B . keep; from being polluted C . prevent; from being polluted D . prevent; being polluted

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广东省深圳市2023-2024学年高一上学期期末考试英语试题