He left___after talking with his brother(anger)

问题描述:

He left___after talking with his brother(anger)
Listen!There is a knock_____the door.
Aat B on C AandB

He left【angrily】after talking with his brother(anger)Listen!There is a knock【on】the door.Aat B on C AandBon表示在……的表面,此处knock 为名词,因为敲门的时候是敲门的表面,所以用on动词时可以是knock ...意思就是填at被这题a knock 中,knock为名词,不能用at knock at 中 knock 是动词原文确实是,采纳你了不客气