__________twiceayear,whetheritisacarorbusoratruck,isthe...

问题详情：

__________twice a year, whether it is a car or 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

【回答】

C

知识点：非谓语动词

题型：选择题