Every means ______ prevent the water from ______.A.are used to; pollutingB.is used to; pollutingC.is

题目简介

Every means ______ prevent the water from ______.A.are used to; pollutingB.is used to; pollutingC.is

题目详情


Every means ______ prevent the water from ______.
A.are used to; pollutingB.is used to; polluting
C.is used to; pollutedD.is used to; being polluted
题型:单选题难度:偏易来源:不详

答案

D

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