What Am I Riddles

Question: What runs around the house but doesn't move?

Question: What grows up and down at the same time?

Question: What has ten letters and starts with gas?

Question: It's hard to give up.Remove part of it and you still have a bit.Remove another part, but bit is still there.Remove another and it remains.What is it?

Question: I may be of the eye,
in order I am pie,
in my center there is a star,
I keep medics where they are.

What am I?