Question

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

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

Answer 1

答案C
这题考查主谓一致，主语是the number of+名词复数，“…的数量”，谓语是单数，a number of+可数名词复数，“许多”，谓语用复数，还有时间是these days所以是一般现在时。选C。