Answer:
I occur twice in eternity. And I'm always within sight.
How do you spell hard water with only three letters?
When I type I tap these on the keys
I start in little but I end in full, you'll find me in half and complete.
What comes down but never back goes up?
I can only be played on a windy day
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?