There a number of volunteers in the club and the number of them growing larger and large

问题补充：

There a number of volunteers in the club and the number of them growing larger and larger.

A. is; are

B. are; is

C. have; is

D. have; are

答案：

A. is; are

(答案→)B. are; is

C. have; is

D. have; are

解析：the number of表示的数量作主语时，谓语动词用单数，a number of…表示许多，作主语时，谓语动词要用复数