请给出答案与理由 .As you can see,the number of our roads rising these days.

题目

请给出答案与理由 .As you can see,the number of our roads rising these days.
A.was keeping B .keep C.keeps D.were keeping

答案

C
主体是number _____ rising ,number是单数,所以排除B和D,these days 在这里应为现在、如今的意思,A是过去时态也不对,应用一般现在时,所以选C.