Tony used to to school but he is used to to school now .A. walk ;taking a bus B. walked

问题补充：

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 the bus

答案：

解析：此题重点考查be used to doing sth和used to do sth 两个句型结构的区别和意义。前者是习惯做某事，后者表示过去常常做某事，现在不做了。