Answer:
When you buy me I am costly, but the only use I have is hanging only. What am I?
I turn everything around but I cannot move. When you see me you see you!
I go around and in the house but never touches the house
I am a mountain at night, meadow at day. What am I?
What can you catch but not throw?
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk