问题 选择题

--Why does the lake smell terrible?

-- Because a large amount of water_______.

A.have polluted

B.is being polluted

C.has been polluted

D.have been polluted

答案

题目分析:句意:--为什么这个湖这么难闻?--因为很多水已经被污染了。a large amount of+不可数名词做主语的时候,谓语是单数,如果是large amounts of+不可数名词做主语的时候,谓语是复数,所以排除AD,而且从Why does the lake smell terrible?可知这个湖已经被污染了,所以选C。

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