Answer:
What building has the most stories?
With a halo of water and a tongue of wood, stone as skin long I stood. What am I?
I am heavy forward but backward I am not. What am I?
I am easy to see but no one likes looking at me. Without me there would be no you. I can make you complain or make you happy. But you almost always take me for-granted.
I help engines spin and pants stay up. What am I?
What begins and has no end? What is the ending of all that begins?