问题补充：
-do you go to school?
- I go to school.
A. What; by bike
B. How; by bike
C. How; ride a bike
D. Where; by a bike
答案：
A. What; by bike
(答案→)B. How; by bike
C. How; ride a bike
D. Where; by a bike
解析：句意：--你怎样去上学？--我骑自行车上学。表示方式时用疑问词how；故排除AD;第二句因为有谓语动词go，所以不能再用动词，故排除C；by+交通工具；故选B。
