Good Riddles

Question: what is ready when you add a letter inside?

Question: I'm not dead i'm not alive, i'm not underground i'm high up in the sky, people speak of me but never saw me. Who am i?

Question: i have a house but it doesnt have a door?

Question: A man entered a house. There was no one else in the house. He walked in to a room, stopped, and slowly raised his hands above his head. After a moment, he turned around, let out a laugh, and left. Why?

Question: Farrah has two brothers. The first brother is called feather one and his second brother is named feather two. What is his name?