Answer:
Always in you, sometimes on you. If I surround you, I can kill you. What am I?
I am very afraid of doing scary activities.
A thousand wheels, but move I do not. Call me what I am, call me a lot. What am I?
The more you work, the more I'll eat.You keep me full, I'll keep you neat. What am I?
Use me to reward good behavior.
Why is the letter B always cool?