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题目
题型:不详难度:来源:
--Why does the river smell terrible?
--Because large quantities of water__________.
A.have polluted B.is being pollutedC.has been pollutedD.have been polluted

答案

解析
考察主谓一致。large quantities of 放在句首,谓语动词永远都使用复数形式,根据句意可知是被动一意思,故D正确。
核心考点
试题【--Why does the river smell terrible?--Because large quantities of water_________】;主要考察你对一般现在时等知识点的理解。[详细]
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