问题描述：
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
Yes,altough they have three sons,___of them live with their parents.
A.neihter B.both C.all D.none
问题解答：
我来补答展开全文阅读