《中华人民共和国城市房地产管理法》规定：“国家实行( )登记发证制度”。

A．土地所有权和房屋所有权

B．土地使用权和房屋所有权

C．土地使用权和房屋使用权

D．土地所有权、土地使用权和房屋所有权

— What did you do yesterday?

— My brother took two friends of ______ to play chess with us. But I don't know ______ of them. [ ]

A. his; all

B. him; both

C. his; either

D. him; neither