He _____ cards with his friends, but now he _____ a walk after supper. [ ]

A. used to play; is used to having

B. is used to playing, used to have

C. used to play; is used to have

D. is used to playing; is used to have

我国古建筑常用建筑镶贴材料是（）.

A.琉璃瓦

B.陶品

C.瓦件

D.以上都是