问题描述:

单选题

The river smells terrible.People must ________ dirty things in it.A.be stopped from throwingB.be stopped to throwC.stop to throwD.stop from throwing

网友答案:
A解析根据第一句话,这条河闻起来很糟糕,可以从两方面解决这个问题:一是人们主动的停止向河里扔脏东西,应是stop throwing;二是人们被阻止向河里扔脏东西,应是be stopped(from)throwing.
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