Question

--- ______ you ______ a bus to school?
--- Yes. But now I usually go to school on foot.

1. A.
   Do, like to take
2. B.
   Do, take
3. C.
   Did, used to take
4. D.
   Are, used to taking

Answer 1

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”