—What’syourfather?—Heisacomposer.Butheusedtowork　　　ate...

问题详情：

 — What’s your father?

— He is a composer. But he used to work 　　　 a teacher.

       A. for                    B. with           C. on                    D. as

【回答】

D

知识点：介词和介词短语

题型：选择题