---How many are there in your class?-25. And there are 20 girls.A. girlsB. boys　C. des

问题补充：

---How many are there in your class?

---25. And there are 20 girls.

A. girls

B. boys

C. desks

D. bags

答案：

A. girls

(答案→)B. boys

C. desks

D. bags

解析：句意：你们班有多少男生？25个，还有20个女生。A女孩；B男孩；C桌子；D书包；结合题意选B。