Answer:
I build up castles. I tear down mountains. I make some men blind, but I help others to see. What am I?
I'm not a bird but I can fly through the sky. I'm not a river but I'm full of water.
hide me from your parents if you have done bad academically this year.
I am owned by the poor, the rich do not need me. If you eat me, you will die! What am I?
I am drawn by everyone without pen or pencil. What am I?
What gets broken without being hold?