---Have you ever traveled abroad?---Sure. I in a small town in the USA with my grandparent

问题补充：

---Have you ever traveled abroad?

---Sure. I in a small town in the USA with my grandparents.

A. used to live

B. was used to living

C. was used to live

D. didn’t use to live

答案：

(答案→)A. used to live

B. was used to living

C. was used to live

D. didn’t use to live

解析：be used to sth习惯于某事;used to do sth过去常常做某事. sth be used to do sth某物被用来做某事。句意：你曾经到国外旅行过吗？——当然了。我过去和我的奶奶住在美国的一个小镇上。结合语境可知选A。