Answer:
I am the thing that is used to make your weight. What am I?
Two in a whole and four in a pair. Six in a trio you see. Eight's a quartet but what you must get is the name that fits just one of me.
I have keys but no locks. I have space but no room. You can enter but can't go outside. What am I?
I dance on one feet and knows only one shape. Someone with same name as me is very good with directions
Many people own a copy of me. Without me the world would fall.
Why was the cook arrested?