Answer:
I have wheels and flies yet I am not an aircraft.
What is always coming but never arrives?
I am whole but incomplete. I have no eyes yet I see. You can see and see right through me. My largest part is one fourth of what I once was.
What happens when you throw a green stone into the Red Sea?
I have two body parts but am used to measure length. What am I?
What language does a billboard speak?