◎ 题干
_____ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

A. Examining
B. Examined
C. Being examined
D. Having been examined
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“_____ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city. [ ]A. ExaminingB. Examined C. Being examin…”主要考查了你对  【动名词的被动式】  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。