成人英语三级考试

【单选题】As you can see, the number of electronic eyes on our roads ______ rising these days.
A. was keeping
B. keep
C. keeps
D. were keeping

网考网参考答案：C
网考网解析：
根据“as you can see”可判断出要用一般现在时，表示经常发生的动作。 查看试题解析出处>>