问题

My uncle ___ go to work on foot, but now he ___to work by bike.
A:used to ; is used to go
B:is used to ; used to go
C:used to ; is used to going
D:is used to ; used to going;
B:is used to ; used to go
C:used to ; is used to going
D:is used to ; used to going;
正确答案是: