试题与答案

— Why does the lake smell terrible? — Be

题型:选择题

题目:

— Why does the lake smell terrible? 

— Because large quantities of water _________.[ ]

A. have been polluted      

B. has polluted    

C. have polluted          

D. has been polluted

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A

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