问题补充：
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
答案：
(答案→)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
解析：考查固定搭配。used to do sth.过去常常做某事；be used to doing sth.习惯于做某事。根据but可知前后是转折关系，后面now说明指现在的情况。那么前面指过去的情况，所以第一空用used to play，表过去经常和朋友打扑克；第二空指现在的情况，所以用is used to playing,表习惯于做某事。所以选A。
