-Why does the Lake smell terrible?-Because large quantities of water .A．have pollutedB．is being pollutedC．has been pollutedD．have been polluted-高中英语-n多题

◎ 题干

-Why does the Lake smell terrible?
-Because large quantities of water .

A．have polluted

B．is being polluted

C．has been polluted

D．have been polluted

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“-Why does the Lake smell terrible?-Because large quantities of water .A．have pollutedB．is being pollutedC．has been pollutedD．have been polluted…”主要考查了你对【一般现在时】，【将来进行时】，【过去完成进行时】，【过去将来时的被动语态】等知识点的理解和应用能力。关于这些知识点的“档案”，你可以点击相应的链接进行查看和学习。

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