Answer:
I am always in front of you, but yet I am never here. What am I?
What is it that after you take away the whole some still remains?
What can you catch but not throw?
I shift around though always slowly. I never move more than a few inches at a time. A large movement by me can kill many people. I am huge yet unseen by humans.
I widen my jaws when you poke two fingers in me. I especially like to devour papers
A little house full of meat, no door to go in and eat.