Answer:
What has many teeth but can't bite?
I am free the first time and second time but the third time is going to cost you money.
I am drawn by everyone without pen or pencil. What am I?
What has words but never speaks?
I am a mini solar powered computer
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.