Answer:
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 say everything I hear to others around. I’m not an animal nor part of the human race. I will immediately repeat after you; But only if my tail is in place.
No matter how little or how much you use me, you change me every month.
If you break me, I'll not stop working. If you can touch me, my work is done. What am I?
I have six faces but not even one body connected, 21 eyes in total but cannot see. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.