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As you can see, the number of cars on roads rising these days. A. we keeping B.

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As you can see, the number of cars on roads rising these days. A. we keeping B.

As you can see, the number of cars on roads _______ rising these days.

A. we keeping      B. keep     C. keeps      D. were keeping

试题答案

C

解析:

keep doing sth. 使…保持某一状态.