I don't skate now but I when I was a kid.A. used toB. am used to itC. suedD. used to do

问题补充：

I don skate now, but I when I was a kid.

A. used to

B. am used to it

C. sued

D. used to do

答案：

(答案→)A. used to

B. am used to it

C. sued

D. used to do

解析：本题是词语辨析。used to表示“过去常常”，后面常接动词原形，be used to 后接动词-ing形式，名词或代词，表示“习惯于……”。