组卷网 > 高中英语综合库 > 单词辨析 > P > pollute
题型:单项选择 难度:0.65 引用次数:598 题号:1771432
If we had taken such effective measures much earlier, the river          so seriously now.
A.is not pollutedB.would not be polluted
C.had not been pollutedD.would not have been polluted
2010·北京海淀·一模 查看更多[5]

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