2. 外语
  3. I don’t skate now, but I used______when I was a kid.

I don’t skate now, but I used______when I was a kid.

admin2013-11-24  9
问题 I don’t skate now, but I used______when I was a kid.
选项 A、to
B、to do
C、to it
D、to doing it
答案A
解析 used to意为“过去常常”，这是为避免重复而省略了前半句中谈到的动词skate，而只保留不定式to；但如果不定式中的动词是be，be不能省略，如：I’m not adiplomat now，but I used to be．
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