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13.In order to reduce the increasing prices of vegetables,the toll(过路费)__________if a truck carrying them passes through a toll station.(  )
A.cancelsB.is cancelled
C.was cancelledD.had been cancelled

分析 为了减少蔬菜价格的上涨,如果运送蔬菜的卡车通过收费站,免过路费.

解答 答案是B.本题考查被动语态.根据句意判断,所以"the toll"和"cancel(取消)"之间是被动关系;本题描述的是现在的一种客观状态,所以用一般现在时的被动语态,故选B.

点评 本题考查被动语态,要分析主语和动词之间的关系,联系动词本身的特定用法;在掌握被动结构的基本形式"be/get+过去分词"的基础上理解不同时态的被动语态的结构,最后进行综合判断.

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