Answer:
I go inside boots and outside shoes.
Everyone in the world needs me. They generously give me but never take me. What am I?
I am black and white. I have strings I have keys. I make sound without my lips. I make dough with no flour
I am very easy to get into,but it is hard to get out of me. What am I?
The more holes you cover the lower I go.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?