．boys and girls in that school are almost equal of which both of the headmasters are prou

问题补充：

．boys and girls in that school are almost equal, of which both of the headmasters are proud.

A. A number of

B. The numbers of

C. Numbers of

D. The number of

答案：

A. A number of

(答案→)B. The numbers of

C. Numbers of

D. The number of

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