Answer:
What is something yet nothing, but if you fill it up it will disappear?
What object has keys that open no locks, space but no room, and you can enter but not go in?
A
Brings the sky a lot closer.
A twiggy home
Two little holes in the side of a hill. Just as you come to the cherry-red mill.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?