Answer:
I go around in circles, but always straight ahead, never complain, no matter where I am led.
I am the only word that looks the same when spelled upside down.
With a halo of water and a tongue of wood, stone as skin long I stood. What am I?
I go in hard, come out soft. Blow me hard and I'll make a pop. What am I?
When you buy me I am costly, but the only use I have is hanging only. What am I?
Why was the cook arrested?