Answer:
By Moon or by Sun I shall be found. Yet I am undone if there's no light around.
I am what one cannot keep, two cannot hold, and three cannot destroy. What am I?
I am what no man ever yet did see, which never was, but always is to be. What am I?
I am a type of cheese made backwards
I have a small hill with seven holes. What am I?
When is it bad luck to see a black cat?