Answer:
What is made of wood but can't be sawed?
Runs smoother than any rhyme, loves to fall but cannot climb.
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
A hill full, a hole full; yet you cannot catch a bowl full. What is it?
What is the smallest bridge in the world?
Be sure to shout for its answers are weak, but there is no language it cannot speak.