Answer:
I am the only thing that always tells the truth. I show off everything that I see. I come in all shapes and sizes. What am I?
What has to be broken before you can use it?
I have two eyes in the front and a lot of eyes on my tail. What am I?
My teeth are sharp my back is straight to cut things up it is my fate.
I go around a yard but do not move. What am I?
No matter how little or how much you use me, you change me every month.