Something must be done to prevent our city ____ by thick smoke.A.to be polluted B.from pollutingC.f

题目简介

Something must be done to prevent our city ____ by thick smoke.A.to be polluted B.from pollutingC.f

题目详情

Something must be done to prevent our city ____ by thick smoke.
A.to be polluted B.from pollutingC.from being pollutedD.polluting
题型:单选题难度:偏易来源:不详

答案

C

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