Answer:
I have four fingers and a thumb, but I'm not living. What am I?
I can run but not walk. Wherever I go, thought follows close behind. What am I?
I am the key that is the hardest to turn
I can be written, I can be spoken, I can be exposed, I can be broken. What am I?
You throw away my outside, you cook my inside. Then you eat my outside and you throw away my inside. What am I?
What is always coming but never arrives?