Answer:
You can see it everyday, but cannot touch it at will. What is it?
I fly yet I have no wings. I cry yet I have no eyes. Darkness follows me. Lower light I never see.
I go through a door but never go in, and never come out. What am I?
People need me yet they give me away every day.
I am pronounced as one letter, written with three. I come in blue, black, brown, or grey. Reverse me and I read the same either way. What am I?
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.