Answer:
I am a nut with a hole. What am I?
The warmer I am, the fresher I am. What am I?
I am owned by the poor, the rich do not need me. If you eat me, you will die! What am I?
If you have me you want to share me. If you share me you don't have me. What am I?
My rings are not worth much, but they do tell my age. What am I?
When is it bad luck to see a black cat?