Answer:
What comes once in a minute, twice in a moment, but never in an hour?
A piece of paper that determines the academic fate of kids everywhere.
One time every year, there is a very special day. Little have the same, everyone party a different way.
What is flat, usually square, and made from trees but isn't wood?
David's father has three sons: Snap, Crackle and?
What is always coming but never arrives?