Answer:
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.
What goes up but never comes down?
I am the hole in the night, the ever watchful eye. I return in a cycle, to enlighten the sky.
I am a span of time you can always see through I am also the timepiece with the most pieces. What am I?
Soldiers line up spaced with pride. Two long rows lined side by side. One sole unit can decide, if the rows will unite or divide.
As round as an apple. As deep as a cup. All the king's horses can't pull it up.