Answer:
What force and strength cannot get through, I with my unique teeth can do. What am I?
I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?
I have a neck and no head, two arms but no hands. I'm with you to school, I'm with you to work. What am I?
The faster you run, the harder it is to catch me. What am I?
I have no bed to sleep and no palace to live. I don't have a single coin but I am known as king. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?