Answer:
The more you work, the more I'll eat.You keep me full, I'll keep you neat. What am I?
What starts with an 'e' and ends with an 'e' but only has one letter?
What type of shoes do spies wear?
What always goes to bed with its shoes on?
I am a protector. I sit on a bridge. One person can see right through me while others wonder what I hide.
The answer I give is yes, but what I mean is no. What was the question?