题目内容
【题目】-Why does the water smell terrible?
-Because large quantities of water __________.
A. is being polluted B. have been polluted
C. is polluted D. has been polluted
【答案】B
【解析】
考查主谓一致。句意:——为什么水会这么难闻?——因为大量的水被污染了。谓语的单复数根据quantity而定,因此用复数。
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