问题
How does Jack usually go to school— He ____________ ride a bike, but now he _________ there to lose weight.
A:used to; is used to walk
B:was used to; is used to walking
C:was used to; is used to walk
D:used to; is used to walking;
B:was used to; is used to walking
C:was used to; is used to walk
D:used to; is used to walking;
正确答案是：
