Answer:
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.
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around
Someone walked into a room and you heard a crash! Someone died. What happened?
I have an eye but cannot see, You'll head inside when you see me.
I fly, yet I have no wings. I cry, yet I have no eyes. Darkness follows me. Lower light I never see.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?