Answer:
I am a word. I become longer when the third letter is removed. What am I?
No legs have I to dance, no lungs have I to breathe. No life have I to live or die, and yet I do all three. What am I?
I am a piece of paper that takes most people 3 or 4 years to get. What am I?
I have lakes but no water forests but no trees and cities but no buildings. What am I?
What goes up and down stairs without moving?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.