Answer:
What is seen in the middle of March and April that cannot be seen at the beginning or end of either month?
I have six faces but not even one body connected, 21 eyes in total but cannot see. What am I?
I speak without a mouth and hear without ears. I have no body but I come alive with wind. What am I?
What comes once in a year twice in a week but never in a day?
I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.