Answer:
I am always hungry, I must always be fed. The finger I lick will soon turn red.
Pregnant every time you see her, yet she never will give birth.
What is full of holes, but can still hold a lot of water?
What is neither inside the house nor outside the house but a necessity for any home?
What is made of wood but can't be sawed?
What is so fragile that saying its name breaks it?