Answer:
I open wide and tight I shut, Sharp am I and paper-cut fingers too, so do take care, I'm good and bad, so best beware.
Runs smoother than any rhyme, loves to fall but cannot climb.
I wear a red robe, with staff in hand, and a stone in my throat.
He has married many women, but has never been married. Who is he?
Which word contains 26 letters but only three syllables?
I build up castles. I tear down mountains. I make some men blind. I help others to see.