Answer:
I have roots nobody sees. I am taller than trees. Up, up I go but I never grow. What am I?
I am used to bat with, yet I never get a hit. I am near a ball, yet never thrown. What am I?
I dig out tiny caves and store gold and silver in them. I also build bridges of silver and make crowns of gold. Sooner or later everybody needs my help yet many people are afraid to let me help them.
I have no wallet but I pay my way. I travel the world but in a corner I stay. What am I?
I am needed for most animals and hardcover books. What am I?
What language does a billboard speak?