It's good for us young to do something _____ our own?填什么介词

问题描述:

It's good for us young to do something _____ our own?填什么介词
A on B.with C.of
选哪一个?

A
on one's own 亲自,靠自己,独立地
of one's own 自动
with one's own (得看具体语境了,一般是“用自己的……”)