Answer:
I'm tall when I'm young and short when I'm old. What am I?
I don't live within a house, nor do I live without. Most will use me when they come in, and again when they go out. What am I?
I come with a train and go with a train and the train doesn't need me but can't go without me.
A piece of paper that takes most people 3 or 4 years to get.
I have a little house in which I live all alone. My house has no doors or windows and if I want to go out I must break through the wall.
Why is the letter B always cool?