Answer:
What month of the year has 28 days?
I am whole but incomplete. I have no eyes, yet I see. You can see, and see right through me. My largest part is one fourth of what I once was.
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it can neither see nor feel it. What is it?
You can see nothing else, When you look in my face, I will look you in the eye, And I will never lie.
What has 4 legs in the morning, 2 legs in the evening and 3 legs in the night?
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.