The students in the mountains go to school on foot.(对划线部分提问)

问题描述:

The students in the mountains go to school on foot.(对划线部分提问)
in the mountains 下划线
()()go to school on foot.
公布正确答案
应该是Which studentsgo to school on foot

Where does the students go to school on foot?
一般疑问句吗?