How deep is the hole It is ____.A.four metre deep B.four metres deep

问题描述:

How deep is the hole It is ____.A.four metre deep B.four metres deep

应该是:four metres' deep
选项都不对

选B
The hole is four metres deep.
It is a four-metre-deep hole.
four-metre-deep 是复合形容词构成形式的一种.