Answer:
What goes through a door but never goes in and never comes out?
I fly when I'm on and float coming off.
I think you live beneath a roof that is upheld by me; I think you seldom walk abroad but my fair form you see; I close you in on every side you very dwelling pave and probably I'll go with you At last into the grave.
I am the state when a person is holding a person inside
I am a way to say goodbye to your sweetheart
When someone uses this acronym, you know you've got to pick up the pace