Peter is ten years old. He is to go to school.A. old enoughB. enough old C. young enoughD

问题补充：

Peter is ten years old. He is to go to school.

A. old enough

B. enough old

C. young enough

D. enough young

答案：

(答案→)A. old enough

B. enough old

C. young enough

D. enough young

解析：根据前一句，可知上学时足够大，同时，enough 修饰形容词，应该位于之后。故选A