Answer:
You buy me to eat, but never eat me. What am I?
I am a chair that can move. What am I?
I help you carry your books.
Man walks over, man walks under, in times of war he burns asunder. What is it?
From house to house I go, sometimes narrow, sometimes wide. Whether there's rain or snow, I always stay outside. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.