Answer:
What gets closer when you blink?
I can be written, I can be spoken, I can be exposed, I can be broken.
It comes only before, it comes only after. Rises only in darkness, but rises only in light. It is always the same, but is yet always different.
In we go, out we go. All around and in a row. Always, always steady flow. When we'll stop, you'll never known. In we go, out we go.
What is 9 added to any number ending in 1