Answer:
I can swim but never get wet. I can run but never get tired. I follow you everywhere but never say a word.
I am the key that is the hardest to turn
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever. What am I?
My first is in fish but no in snail. My second is in rabbit but not in tail. My third is in up but not in down. My fourth is in tiara but not in crown. My fifth is in tree you plainly see. My whole a food for you and me.
I have no life but I can die. What am I?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.