Answer:
What relies on columns but isn't a house, and asks for help but can't speak itself?
I have four wings but cannot fly. I never laugh and never cry. On the same spot always found, toiling away with little sound.
Who eats a lot of iron without getting sick?
What flies forever, Rests never?
Someone walked into a room and you heard a crash! Someone died. What happened?
You use it between your head and your toes, the more it works the thinner it grows.