Answer:
I am all around, yet to me you are half blind. Sunlight makes me invisible and difficult to find. What am I?
The more I dry, the wetter I get. 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?
I belong to you but others use me more often than you do. What am I?
I have Eighty-eight keys but cannot open a single door.
I am a cave full of bones and the house of a worm.