Answer:
What goes through towns and over hills but never moves?
I am the key that is the hardest to turn
What is cut on a table but is never eaten?
I hold two people together but touch only one. What am I?
I am tomorrow's yesterday and yesterday's tomorrow. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.