I'm auditioning for 'Annie' the musical...?

The chorus is the part that says "Tomorrow tomorrow i love ya tomorrow", and a verse is like the part that says "the sun will come out tomorrow, bet your bottom dollar that tomorrow there'll be sun". When they say be prepared to dance, they are just saying to expect having to dance in front of them, so they will teach you choreography and you will have to do that. It's always good to have a monologue prepared, so I would learn it just in case you need it. It's always good to be over prepared!