Question

【题目】The river smells terrible. People must _____ dirty things into it.

A. be stopped to throw

B. be stopped from throwing

C. stop to throw

Answer 1

【答案】B

【解析】

试题分析：句意：河流闻起来很糟糕。人们必须被禁止往河里倒脏东西。此题考查含有情态动词的被动语态，情态动词+be+动词的过去分词。根据句意，应选B。