Answer:
I widen my jaws when you poke two fingers in me. I especially like to devour papers
The sun bakes me, the hand breaks me, the foot treads on me, and the mouth tastes me. What am I?
I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?
I am the kind of a tree that is carried in your hand. What am I?
If you break me, I'll not stop working. If you can touch me, my work is done. What am I?
A little house full of meat, no door to go in and eat.