Answer:
Die without me, never thank me. Walk right through me, never feel me. What am I?
I go around in circles but always straight ahead never complain no matter where I am led. What am I?
I hide in a dark tunnel awaiting my time. I can only be released by pulling back. Once released I may do unstoppable damage.
He has married many women, but has never been married. Who is he?
Two bodies have I, though both joined in one. The more I stand still the faster I run. What am I?
What language does a billboard speak?