19. Teacher: Chris, you need to pay more attention to your attendance. Chris: ______I thought students could join clubs. Teacher: Clubs are fine, but you should also concentrate on your studies. Chris: I know. I’ll try to manage my time more effectively. (A) But I’m sure the payment I made was correct. (B) It was just because my grandmother was sick. (C) I was practicing with the band I’m leading. (D) I think it broke down a couple of days ago.