Answer:
Feed me and I live. Give me water and I die. What am I?
Taken from a mine and then locked up in a wooden case. I am used by students everyday.
I am a place where time is told. I am not bought and I am not sold. What am I?
I love to twist and dance. Though wingless, I fly high up into the sky. What am I?
I work when I play and play when I work. What am I?
What never gets any wetter no matter how hard it rains?