—What the number of the students in your school?—About two thousand. A number of them fro

问题补充：

—What the number of the students in your school?

—About two thousand. A number of them from England.

A. is; are

B. is; is

C. are; is

D. are; are

答案：

(答案→)A. is; are

B. is; is

C. are; is

D. are; are

解析：句意：在你们学校的学生的总数是多少？大约两千，他们中的许多来自英国。the number of …, ……的总数，作主语是单数。a number of …,许多的……作主语是复数。根据句意，故选A。