Answer:
There is one in every corner and two in every room.
What is yours but only used by others?
You walk into a room with a match, a kerosene lamp and a fireplace. Which do you light first?
No matter how little or how much you use me, you change me every month. What am I?
It is where kings, queens, knights and bishops go to war together.
People take me on walks and I run and have fun. What am I?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?