Answer:
I cannot be bought, cannot be sold, even if I'm sometimes made of gold. What am I?
If you lose me, you may cause people around you to lose me too. What am I?
I am a protector of the scoreboard.
Railroad Crossing, look out for the cars. Can you spell that, without any R's?
I can be written, I can be spoken, I can be exposed, I can be broken. What am I?
When is it bad luck to see a black cat?