Answer:
What belongs to you but others use it more than you do?
It rows quickly with four oars but never comes out from under its own roof. What is it?
I'm light as a feather yet the strongest person can't hold me for more than a few minutes. What am I?
What is easy to get into, but hard to get out of?
Soft, hairy, from door to door. I am the pet that always stays on the floor. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.