There is a new problem involved in the popularity of private cars _______ road c

题型：不详难度：来源：

There is a new problem involved in the popularity of private cars _______ road conditions need _______.

A．that; to be improved

B．which; to be improved

C．where; improving

D．when; improving

答案

C

解析

主要测试同位语从句。由句子语境可知句意;有个新的问题卷入私家车行列：道路状况需要改进。结合同位语从句的定义可知：问题的具体内容既是：到了状况需要改进。因此属于该句型结构。例如：There was a new problem put forward at the meeting where we could get the loan。会议上提出一个新问题，我们到哪儿弄到贷款。