问题
选择题
---- ______ you ______ a bus to school?
---- Yes. But now I usually go to school on foot.
A．Do, like to take
B．Do, take
C．Did, used to take
D．Are, used to taking
答案
答案：C
根据“But now I usually go to school on foot.”句意，应指过去。故选C。used to do指“过去常常做某事”