----Are Mr. and Mrs. Wang living alone in the house?
----Yes, altough they have three sons, of them live with their parents.
A. neihter B. both C. all D. none
----Are Mr. and Mrs. Wang living alone in the house?
----Yes, altough they have three sons, of them live with their parents.
A. neihter B. both C. all D. none
D
【解析】代词的考察 句意为“尽管他们有三个儿子，但是没有一个和他们的父母住在一块儿。” Neither两者之间任何一个都不，both两者都；all三者或三者以上都，none三者或三者以上以上任何一个都不。