Answer:
I have a small hill with seven holes. What am I?
You cannot keep me until you have given me. What am I?
Cloud is my mother. Wind is my father. I come down but never go up. What am I?
I can climb mountains, cross streams, handle hundreds of feet each day, yet I never move. What am I?
Two in a whole and four in a pair. Six in a trio you see. Eight's a quartet but what you must get is the name that fits just one of me.
Two brothers we are, great burdens we bear. All day we are bitterly pressed. Yet this I will say, we are full all the day, and empty when go to rest.