Answer:
Why is Kim Jong Un so cruel?
I have one, you have one. If you remove the first letter, a bit remains. If you remove the second, bit still remains. If you remove the third, it still remains.
What gets wetter and wetter the more it dries
How do bees get to school?
How did the computer get drunk?
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around