Answer:
What has keys but no locks a space but no room and you can enter but can't go in?
The 8 of us go forth and not back to protect our king from a foe's attack. What am I?
You hear me speak, for I have a hard tongue. But I cannot breathe, for I have not a lung. What am I?
Poor people have it. Rich people need it. If you eat it you die. What is it?
Everyone in the world needs me. They generously give me but never take me. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.