Answer:
I am a word of letters three. Add two and fewer there will be. What word am I?
I am alive without breath and cold as death. I am never thirsty but always drinking.
What comes once in a year twice in a week but never in a day?
There was a girl half my age when I was 12, now I am 66, how old is she?
I am quick when I'm thin. I am slow when I'm fat. Wind is my worst nightmare. 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.