Answer:
Travel a mile and I will change, travel a million and I will end as I started. What am I?
What's full of holes but still holds water?
I belong to you but others use me more often than you do
What is it that makes tears without sorrow. And takes its journey to heaven?
I am black, white, and read all over. What am I?
No matter how little or how much you use me, you change me every month.