What Am I Riddles

Question: Hollow of water, tongue of wood, skin of stone, long I've stood. What am I?

Question: Shake me and I'll do what you want,
but first you have to pull me from the ground.
I'm on the tip of your tongue and over your shoulder.

What am I?

Question: You find me behind the stars; or in a sixth, seventh, or third.
It takes something round, a computer, and me to make pie.
I am bigger than anything you can think of.

What am I?

Question: What goes up when the rain goes down?

Question: You put me in dry but then I get wet.
The longer I stay in, the stronger it will get.

What am I?