Answer:
I'm orange when long I'm white when short. What am I?
I belong to everyone. Sometimes make you happy, sometimes make you sad. I will never end until the day you do. What am I?
When you buy me I am costly, but the only use I have is hanging only. What am I?
If you have me, you want to share me. Once you share me, you won't have me. What am I?
What runs but never walks has a mouth but never talks has a head but never weeps has a bed but never sleeps?
No matter how little or how much you use me, you change me every month.