Short what am I riddles

I never ask questions, but always answered. What am I?

I am taken from a mine, and shut up in a wooden case from which I’m never released, and yet I am used by many. What am I?

I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?

Never ahead, ever behind, yet flying swiftly past; for a child, I last forever; for an adult, I'm gone too fast. What am I?

I am always will be coming, but I will never come. What Am I?

I travel all over the world, but always stay in my corner. What am I?

I travel all over the world. But I could not move, just stay in a same single spot. What Am I?

I have four legs and a long tail. I eat oats and hay. I love to run fast. I let people ride on my back. I am a...

You will always find me in the past. I can be created in the present, but the future can never taint me. What am I?

I live in the ocean. I like to eat crabs. I can change colors. My eight legs are called tentacles. I am an...