Answer:
Mouth up it gets filled, mouth down it gets empty.
Inside a burning house, this thing is best to make. And best to make it quickly, before the fire's too much to take.
Many foods can make me strong but give me water and I won't last long.
A father's child, a mother's child, yet no one's son
No matter how little or how much you use me, you change me every month. What am I?
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?