问题
Are you able to a new light in my car, Andy—Of course. I can make it right now. It’s a piece of cake.
A:are used to swim ,used to keep
B:are used to swimming , is used to keep
C:used to swim，used to keep
D:used to swim，is used for keeping;
B:are used to swimming , is used to keep
C:used to swim，used to keep
D:used to swim，is used for keeping;
正确答案是：
