Answer:
I am full of holes but still holds water.
I am a word of letters three. Add two and fewer there will be. What word am I?
Without me everyone would lose their head. What am I?
I have a head, tail, but no arms and legs. What am I?
You see a boat filled with people. It has not sunk but when you look again you don't see a single person on the boat. Why?
I'm the source of all emotion but I'm caged in a white prison.