— How do you often go to work?—I go to work by bus but now on foot.A. used toB. am used

问题补充：

— How do you often go to work?

—I go to work by bus, but now on foot.

A. used to

B. am used to

C. am used for

D. use to

答案：

(答案→)A. used to

B. am used to

C. am used for

D. use to

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。get used to习惯于某事。句意：你经常怎么去上班？——我过去常常乘公交去上班，但是现在步行。结合语境可知选A。