_____ boys come to swim.Do you know_____ of them?

问题描述:

_____ boys come to swim.Do you know_____ of them?
A.A number of;a number B.The number of;a number
C.The number ;numbers of D.A number ;the number
额.......我这试卷上是D.A number ;the number

D是不是应该是A number of啊