Answer:
I am two-faced but bear only one. I have no legs but travel widely. Men spill much blood over me. Kings leave their imprint on me. What am I?
You use a knife to slice my head and weep beside me when I am dead.
I never was but always will be. No one ever saw me but everyone knows I exist. I give people the motivation to better themselves every day. What am I?
Iron roof, glass walls, I burn and burn but never fall. What am I?
You kick me, you punch me, and you beat me up all class. When you leave, you don't even say thanks for allowing you to beat me up. What am I?
A little house full of meat, no door to go in and eat.