Answer:
Ch side by side, you are inside.
You are on an electric train. Which direction will the smoke fly in?
What is something yet nothing, but if you fill it up it will disappear?
This is the main ingredient in spaghetti and Mac-ยญN-ยญCheese.
What has to be broken before you can use it ?
What goes around and around the wood, but never goes into the wood?