Answer:
What is seen in the middle of March and April that cannot be seen at the beginning or end of either month?
I'm a kind of cup that doesn't hold water, but makes a lot of noise repeatedly. What am I?
A spirited jig I dance bright, banishing all but darkest night. Air can't kill me but water can. Share me, I won't get less unless wind ruins me. What am I?
The higher I climb, the hotter I engage. I cannot escape my crystal cage. What am I?
I never sleep yet sometimes I weep. I can get angry or just be happy. Wherever you go, I will follow. No matter what you do, I will be there. I cannot die. What am I?
No matter how little or how much you use me, you change me every month.