Answer:
What word becomes shorter when you add two letters to it?
I am a king who's good at measuring stuff. What am I?
Brown I am and much admired; many horses have I tried; tire a horse and worry a man; tell me this riddle if you can.
What has a head and a tail but no body?
kings and queens may cling to power and the jesters may have their call. I am the most common but I can rule them all.
No matter how little or how much you use me, you change me every month.