There is a new problem________in the popularity of private cars that road conditions need improving....
2022-12-20 09:59:30 120次 2014届辽宁省高二下学期第一次月考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
There is a new problem________in the popularity of
private cars that road conditions need improving.
A．involved B．to involve
C．involving D．being
involved
本题链接：
