Answer:
What falls down but never gets hurt?
They are two brothers. However much they run, they do not reach each other.
Precious stones in a pack of cards.
What eight letter word has "kst" in middle, in the beginning and at the end?
There is 10 birds on a branch, a man shot 5 of them. How many were left?
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.