- What do you want to be when you grow up?-I want to be social worker. Many people are in

问题补充：

- What do you want to be when you grow up?

-I want to be social worker. Many people are in great need of our help.

A. a

B. an

C. the

D. 不填

答案：

(答案→)A. a

B. an

C. the

D. 不填

解析：句意：当你长大的时候，你想做什么？我想做一名社会服务人员。许多人非常需要我们的帮助。a social worker表示一个社区服务员，表示泛指，辅音音素开头发音。故选A