Answer:
You hear me speak, for I have a hard tongue. But I cannot breathe, for I have not a lung. What am I?
Goes over all the hills and hollows, Bites hard, but never swallows.
I help engines spin and pants stay up. What am I?
I am always hungry I must always be fed. The finger I lick will soon turn red.
What can one catch that is not thrown?
What age most travelers have?