Answer:
You use a knife to slice my head but you weep beside me when I am dead
I wiggle and cannot see; sometimes underground and sometimes on a tree. I really don't want to be on a hook and I become a person when combined with “book”.
I twist and turn and leaves a loop
I am the thing that is used to make your weight. What am I?
When it comes to me, you go on red and stops on green. What am I?
When is it bad luck to see a black cat?