Answer:
What flies around all day but never goes anywhere?
A precious stone, as clear as diamond. Seek it out whilst the sun's near the horizon. Though you can walk on water with its power, Try to keep it, and it'll vanish within an hour.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
What flies without wings? What passes all things? What mends all sorrow? What brings the morrow?
Where do you go in through one hole and come out through two holes at the same time?
When is it bad luck to see a black cat?