Answer:
I help engines spin and pants stay up
What begins with T ends with T and has T in it?
You can always find me in the past. I am created in the present, but the future can not change me. What am I?
To cross the water I'm the way. For water I'm above I touch it not and truth to say I neither swim nor move.
I'm not alive but I grow I don't have lungs but I need air I don't have a mouth but water can kill me. 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.