Question

【题目】He ____ go out with his parents, but now he ____ staying at home alone.

A. used to; is used to B. is used to; used to

C. used to; used to D. is used to; is used to

Answer 1

【答案】A

【解析】句意：他过去常和父母一起出去，但现在他习惯一个人呆在家里了。固定搭配used to+动词原形，过去常常； be used to习惯于，其中to为介词。故选：A。