Riddles.
 

Just to keep your mind awake on a dull numbing Monday.

QUESTION:- I am taken from a mine, and shut up in a wooden case, from which I am never released, and yet I am used by almost everybody.????

Carbon Dioxide gas?
Uranium?

Nope, Although carbon is invovled nowadays :)

A PENCILE....or the graphite or lead or sumthing along those lines?

All the word's are there just in the wrong order. :D

lead/

one word missing !!

What is it that you can keep after giving it to someone else?

a promise

Well done. :P