Answer:
who do you think you know but sometimes you don't
What has four wings but cannot fly and uses the wind but does not know why?
Jack and Jill when up the hill jack fell down
I'm white, I'm round, but not always around. Sometimes you see me, sometimes you don't.
I am what remains when nothing is left.What am I?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?