Answer:
I have 4 wings but cannot fly. I never laugh and never cry. On the same spot I'm always found toiling away with little sound. What am I?
You heard me before and then again. Afterward I die, until you call me again. What am I?
I am always around you but often forgotten. I am pure and clean most time but occasionally rotten.
Brown I am and much admired. Many horses have I tried. Tire a horse and worry a man, tell me this riddle if you can. What am I?
One simple click, one simple flash. A piece of memory, for years I'll last. What am I?
Give it food and it will live, give it water and it will die.