Answer:
I always have to work with something in my eye.
I am a person who pretends to be someone else
Break me and I am better immediately set and harder to be broken again.
I am heavy forward, but backward I'm not. What am I?
No legs have I to dance, no lungs have I to breathe. No life have I to live or die, and yet I do all three. What am I?
I always murmur but never talk. Always run but never walk. I have a bed but never sleep, have a mouth but never speak. What am I?