Answer:
I'm light as a feather yet the strongest person can't hold me for more than a few minutes. What am I?
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.
What comes once in a minute twice in a moment but never in a thousand years?
I am needed for most animals and hardcover books
When you need me, you must find me. When you find me, you no longer need me. What am I?
I never sleep yet sometimes I weep. I can get angry or just be happy. Wherever you go, I will follow. No matter what you do, I will be there. I cannot die. What am I?