---Are the Smiths living in the house al
问题:
---Are the Smiths living in the house alone ?
--- Yes, although they have three sons, _____ of them live with their parents.
A.neither
B.both
C.all
D.none
---Are the Smiths living in the house alone ?
--- Yes, although they have three sons, _____ of them live with their parents.
A.neither
B.both
C.all
D.none