问题补充：
I have short hair, but now I to having long hair.
A. use to, am used
B. used to, am used
C. am used to, used
D. am used to, use
答案：
A. use to, am used
(答案→)B. used to, am used
C. am used to, used
D. am used to, use
解析：used to do，表示过去常常做某事，而第二空为be used to doing sth表示习惯于做某事,答案为B
