Answer:
I can be written, I can be spoken, I can be exposed, I can be broken. What am I?
I am round. I have only one line. Circle is not my name indeed. What am I?
There's a one-story house in which everything is green. Green walls green windows green doors. What color are the stairs?
I am a protector of the scoreboard.
What bone has a sense of humor?
What made Cyclops quit teaching?