Answer:
You can only have it once you have given it.
A time when they're green. A time when they're brown. But both of these times, cause me to frown. But just in between, for a very short while. They're perfect and yellow. And cause me to smile.
What begins and has no end? What is the ending of all that begins?
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.
It happens when something has been cut with H2O.
Why was the cook arrested?