Answer:
I am a nut with a hole. What am I?
The more you take away from it the larger it becomes. What is it?
I sit high glowing and watch the world go by. Without me everything would seem dull and dangerous. What am I?
A trail, a union, together tied. Come across me and you will find you cannot change the course I'm on. Without me you cannot travel on. What am I?
I help engines spin and pants stay up. What am I?
When is it bad luck to see a black cat?