—What do you want to be when you? —A doctor.A. look upB. come upC. get upD. grow up

问题补充：

—What do you want to be when you?

—A doctor.

A. look up

B. come up

C. get up

D. grow up

答案：

A. look up

B. come up

C. get up

(答案→)D. grow up

解析：根据题干，本句的意思是“当你长大后，想干什么？”look up是“查阅”，come up是“升起”，get up是“起床”，grow up是“长大”。所以本题选D。