Allpossiblemeans________beentak

发布时间:2020-07-28 17:48:10

All possible means ________ been taken to stop the river ________.A.have; pollutingB.has; pollutedC.has; from pollutedD.have; being polluted

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D解析means为单复数同形词,因为有all修饰,所以为复数名词,谓语应用复数形式;第二空考查stop…(from)doing的用法,因为河水会被污染,故用被动语态。
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