__ twice a year ,whether it is a car or a bus or a truck,is the rule that every driver must obeyA.Examining B.Examined C.Bing examined D.Having been examined为何选C
问题描述：
__ twice a year ,whether it is a car or a bus or a truck,is the rule that every driver must obey
A.Examining B.Examined C.Bing examined D.Having been examined
为何选C
答
C 做主语用动名词结构。这里含有被动意思，被检查，所以是 C
答
这道题目__ twice a year是主语，过去分词不能作主语，只能用动名词，排除B，主语没有时态，只有语态，排除四不像的D，而examine的主语俨然是后面提到的a car or a bus or a truck，所以用被动，被检查，故选c，只不过你打错单词了,应该是being examined
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答
答案是C being examined .正常语序Being examined twice a year is the rule that every driver must obey in this city,whether it is a car or a bus or a truck.动名词做主语,有表达被检查的意思....