Answer:
What is yours but only used by others?
A train just leaves a station and enters a tunnel. Where is the best place for a claustrophobic person to sit?
You draw a line. Without touching it, how do you make the line longer?
What is a ten letter word that starts with gas?
What is as big as you are and yet does not weigh anything?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Logic
Animal
Difficult
Easy
Food
Funny
Kids
What am I?