____his neighbors,Mary felt lonely when she studied in USAA,Not knowing B,Knowing not C,Not having known D,Having not known

问题描述:

____his neighbors,Mary felt lonely when she studied in USA
A,Not knowing B,Knowing not C,Not having known D,Having not known

Mary 怎么是个男生?

A,逻辑主语是mary,主动发出的动作,(her neighbors吧?),用Ing形式,根据句意,是不认识邻居,故选A

C
意思是,玛丽在美国学习的时候,因为还不认识她的邻居,所以感觉孤单.