问题补充：
---- do the students go to school?
----It depends where they live.
A. How; of
B. What; of
C. How; on
D. What; on
答案：
A. How; of
B. What; of
(答案→)C. How; on
D. What; on
解析：how怎样；what什么；of关于，……的；on在上面。句意：这些学生们怎样去学校？——那取决于他们住在哪里。Depend on依靠，依赖。故选C。
