I don’t skate now, but I used______when I was a kid.A、toB、to doC、to itD、to do

游客2025-04-01  0

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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