I'm a real fitness freak.
Ruth: You're in great shape,Keith.
Kith: thanks.I guess I'm a real fitness freak.
Ruth: How often do you work out?
Keith:Well,I do aerobics twice a week.And I play tennis every week.
ruth: tennis? that sounds like a lot of fun.
Keith: Oh,do you want to play sometime?
Ruth: Uh,...how well do you play?
Keith: Pretty well,I guess.
Ruth: Well,all right.But I'm not very good.
Keith: No problem.I'll give you a few tips.