Answer:
I start new then become old. Start clean but become dirty. I usually start big then become little. What am I?
I am black within and red without With four corners round about.
I am two-faced but bear only one. I have no legs but travel widely. Men spill much blood over me. Kings leave their imprint on me. What am I?
I know a word of letters three. Add two and fewer there will be. What is the word?
I fill a room but take no space. What am I?
When is it bad luck to see a black cat?