Answer:
What two keys cannot open any door?
Travel a mile and I will change, travel a million and I will end as I started. What am I?
My first is in some but not in all. My second is in tiny but not in tall. My third in little but no in big. My fourth in port but not in pig. My whole is made in nature's way. For clothing rugs used every day.
I start with T end with T and within me is T.
You see a boat filled with people. It has not sunk but when you look again you don't see a single person on the boat. Why?
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.