—What are you going to be when you grow up Sam?— teacher like you.A. AB. AnC. TheD. /

问题补充：

—What are you going to be when you grow up，Sam?

— teacher like you.

A. A

B. An

C. The

D. /

答案：

(答案→)A. A

B. An

C. The

D. /

解析：冠词的用法。a 修饰以辅音音素开头的单数可数名词；an修饰以元音音素开始的单数可数名词。the表特指。句意为“你长大了打算干什么？”“像你一样做一位老师。”故选A。