Answer:
Used left or right I get to travel over cobblestone or gravel. Used up I vie for sweet success used down I cause men great duress.
I am the only thing that always tells the truth. I show off everything that I see. I come in all shapes and sizes. What am I?
What flies without wings?
Of the king I am blue and of the peasant I am red. Of the frog I am cold and of the dog I am hot instead. What am I?
I hold two people together but touch only one. What am I?
Give it food and it will live, give it water and it will die.