Answer:
What can fill a room but takes up no space?
I never sleep yet sometimes I weep. I can get angry or just be happy. Wherever you go, I will follow. No matter what you do, I will be there. I cannot die. What am I?
I can swim but never get wet. I can run but never get tired. I follow you everywhere but never say a word.
I ask no questions, but receive a lot of answers. What am I?
I look at you, you look at me. I raise my right, you raise your left. What am I?
What is lighter than what it is made of?