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

题干

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; improved

D：when; improving

上一题下一题 0.0难度选择题更新时间:2018-01-28 05:02:31

答案(点此获取答案解析）

A

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