To plant the tree, we must dig _____. A. a three feet deep h
To plant the tree, we must dig _____. A. a three feet deep hole B. three-foot
To plant the tree, we must dig _____.
A. a three feet deep hole B. three-foot-deep a hole
C. a hole three feet deep D. a three-feet-deep hole
我知道答案选c three feet deep做hole的后置定语,
我觉得a也是对的诶,为什么a three feet deep hole 不可以,就像a small round wooden都可以,求高手赐教