问题 选择题

The river smells terrible. People must_____ dirty things into it.

A.be prevented to throw

B.prevent from throwing

C.prevent to throw

D.be prevented from throwing

答案

答案:D

题目分析:句意:这条河太难闻了。必须阻止人们朝里面倾倒垃圾。Prevent sb from doing sth意为“阻止某人做某事”;根据句意可知应该是人们被阻止去做某事,B项缺少宾语;故选D。

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