Question

—How do you usually go to school?

—I_____ take a bus, but now I _____ there.

A. was used to, am used to walk

B. was used to, am used to walking

C. used to, am used to walking

Answer

C

【解析】句意：——你通常怎么去上学？——我过去常常乘公共汽车，但是我现在习惯走着去。be used to do被用来做某事；be used to doing sth 习惯于做某事；used to do sth过去常常做某事，根据句意应选C

点睛：be used to doing习惯于做某事，to是介词,后需加名词或动词，例如：He is used to walking.；used to do 过去常常做某事，其后接动词原形，to是不定式符号，例如：He used to live in the country.；be used to do被用来做某事，例如：Wood is used to make paper.