Answer:
I'm light as a feather yet the strongest person can't hold me for more than a few minutes. What am I?
What word becomes shorter when you add two letters to it?
If you have me, you want to share me. Once you share me, you won't have me. What am I?
I am long and slim works in light. Has but one eye and an awful bite.
I stay where I am when I go off. What am I?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.