Answer:
What is always coming every day, but never arrives until the next?
They are two brothers. However much they run, they do not reach each other.
What is between heaven and earth?
What do cheetas, dalmatians and appaloosas have in common?
What fiveletter word, no matter how you pronounce it, is always pronounced wrong?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.