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Every possible means been taken to prevent the river .A.have; pollutingB.has; po

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Every possible means been taken to prevent the river .A.have; pollutingB.has; po

Every possible means _______ been taken to prevent the river _________.

A.have; pollutingB.has; polluted
C.has; from being pollutedD.have; being polluted

试题答案

C

解析