Answer:
I am a rock group with four members all of whom died in plane crashes. Who am I?
I can go through glass without breaking it.
What has a ring but no finger?
I make billions of dollars selling windows. Who am I?
Draw fire or fill me; I'm still empty.
No matter how little or how much you use me, you change me every month.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic