I went through five of these at different allo schools. Make sure you do your homework; it's a chance to stand out.
One question I always asked:
What would you recommend I do (or add to my plan) over the next year before I hope to matriculate, that would make me a better-prepared medical student?
Learn about their programs, have questions there though they're mostly for fillers. You're there to sell yourself. Go get em champ.