Answer:
I hide but my head is outside. What am I?
I'm white and used for cutting and grinding. When I'm damaged, humans usually remove or fill me. For most animals I am a useful tool. What am I?
I am long and slim works in light. Has but one eye and an awful bite.
Iโm where yesterday follows today. And tomorrowโs in the middle. What am I?
I have a bank, but no money. I have a bed but do not sleep.I have a mouth but cannot eat. What am I?
I am rarely touched but often held. If you are smart you'll use me well. What am I?