Answer:
I am in the past, never in the future. I don't exist, but have existed. I saw what you saw, and this is what I will ever see. What am I?
I wiggle and cannot see; sometimes underground and sometimes on a tree. I really don't want to be on a hook and I become a person when combined with “book”.
You throw away my outside, you cook my inside. Then you eat my outside and you throw away my inside. What am I?
I am made of wood but can't be sawed? What am I?
The 8 of us go forth and not back to protect our king from a foe's attack. What am I?
What language does a billboard speak?