Answer:
I go around in circles, but always straight ahead. Never complain, no matter where I am led. What am I?
Why did the computer keep sneezing?
I need to be taken before you can have me. What am I?
I can fall off a building and live, but in water I will die. What am I?
I am owned by Old McDonald.
No matter how little or how much you use me, you change me every month.