Answer:
What do you get when you cross a cow with a trampoline?
I make everyone blind. You can't see me but I will always come back for you. What am I?
I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?
After you go through a fall, I will take over. All life will stall, or at least grow slower. What am I?
Send poorly behaved children to me and let them sit here. What am I?
No matter how little or how much you use me, you change me every month.