英语名词练习
14. He had a ___sleep yesterday.

A. a good night B. a good-night

C. a good night’sD. good-night’s

15. ___is not a long way to drive.

A. Three miles distance B. Three-mile distance

C. Three miles’ distance D. A three-mile-distance
能和我说一下加“-”在什么情况下,有什么格式?