问题
选择题
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
答案
答案：A
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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
答案：A