问题
选择题
As you can see, the number of cars on our roads _____ rising these days. [ ]
A. was keeping
B. keep
C. keeps
D. were keeping
答案
答案：C
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As you can see, the number of cars on our roads _____ rising these days. [ ]
A. was keeping
B. keep
C. keeps
D. were keeping
答案：C