That’s where I live when I was a child.A. used toB. was used toC. was using toD. am used

问题补充：

That’s where I live when I was a child.

A. used to

B. was used to

C. was using to

D. am used to

答案：

(答案→)A. used to

B. was used to

C. was using to

D. am used to

解析：考察used to用法.be used to sth习惯于某事.used to 过去常常做某事.句意:那是我小时候常常住的地方.故选A.