Answer:
Though I have neither legs nor feet, my use is for to go; Although I cannot speak, I tell what others want to know
What is it something that you always have but you always leave behind?
Something wholly unreal, yet seems real to I. Think my friend, tell me where does it lie?
My teeth are sharp, my back is straight, to cut things up it is my fate.
What goes up but never comes down?
What never gets any wetter no matter how hard it rains?