Answer:
Always old, sometimes new. Never sad, sometimes blue. Never empty, sometimes full. Never pushes, always pulls.
I'm white, I'm round, but not always around. Sometimes you see me, sometimes you don't.
A hill full, a hole full, yet you cannot catch a bowl full.
The land was white the seed was black it'll take a good scholar to riddle me that. What is it?
With head without hair. With mouth without tooth.
What is the middle of water but is not an island?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?