Answer:
What do you call a witch that lives in the sand?
You row in one while you float.
What eight letter word has "kst" in middle, in the beginning and at the end?
It speaks without a tongue, and listens without ears.
What comes one time in today, three times in tomorrow and never in the future?
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.