问题补充：
It takes half an hour on foot.
A. my, to get to school
B. me, to get to school
C. my, going to school
D. me, going to school
答案：
A. my, to get to school
(答案→)B. me, to get to school
C. my, going to school
D. me, going to school
解析：句意：我走路到学校需要半个小时的时间。It takes sb some time to do sth做某事花费某人多长时间，take动词后接宾语，用人称代词的宾格形式，故选B
