Mary: What are you gonna do today, Nack?
Nack: I'm gonna teach music this evening.
Mary: Oh, you have a lesson every week, dont' you?
Nack: Yes. I teach music almost every Monday.
Mary: What time do you teach music every Monday?
Nack: At 8 p.m.
Mary: What subject do you teach today?
Nack: I think I will teach a method of rythm.
