Tony used to ______ to school ,but he is used to ______ to school now .

问题描述:

Tony used to ______ to school ,but he is used to ______ to school now .
A.walk ,taking a bus B.walked ,took a bus C.walk ,take a bus
后半段的is used to如何翻译,详解本题解题思路,

A
used to do sth 过去常常做某事
be used to doing sth习惯于做某事