The people ___(wait) in line are buying the books.用正确的形式填空.说说为什么..

问题描述:

The people ___(wait) in line are buying the books.
用正确的形式填空.
说说为什么..

waiting
作后置定语来修饰people

waiting 动名词做后置定语

waiting修饰people表示正在等 并且动作是主动的