Answer:
Is always in front of you but cannot be seen?
What do people spend a lot of money on every year but never want to use it?
Big as a saucepan, deep as a cup, Even a river can't fill it up. What is it
You do this into someone's ear when you want to be discreet.
Mountains will crumble and temples will fall, and no man can survive its endless call. What is it?
What never gets any wetter no matter how hard it rains?