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?
What jumps when it walks, but sits when it stands?
I contain six letters, minus one and you got twelve. What am I?
I sleep by day, I fly by night. I have no feathers to aid my flight. What am I?
I am commonly ate before I'm born and after I'm dead.
No matter how little or how much you use me, you change me every month.