◎ 题干
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. cancels  
B. is cancelled
C. was cancelled
D. had been cancelled
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“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 can…”主要考查了你对  【一般现在时的被动语态】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。