Answer:
What is the thing that stays the same size, but the more it's used the more it decreases?
What bird can lift the heaviest weight?
I know a word of letters three. Add two, and fewer there will be!
Not a burden for its weight and daily carried out, He who takes it wishes it had never come about
This only turns over once you have traveled very far. What is it?
What is always coming but never arrives?