" We can't, Harry, " said Hermione, looking apologetic. " Ron and I've got to go to the prefects'carriage first and then patrol the corridors for a bit."
One of the worst things that you can say or do in an interview is be apologetic, to be sorry about something that you just don't need to be sorry about.
Halder gave an apologetic shrug. I helped Pate carve the stone for the pommel, the builder said, " and your friend Sam bought the garnets in Mole's Town. "
Harry tried to make an apologetic face to Lavender, but it might have turned out simply amused, because she looked more offended than ever as the Fat Lady swung shut behind them.
" Yeah, " said Harry, " but he just attacked Snape for no good reason, just because-well, just because you said you were bored, " he finished, with a slightly apologetic note in his voice.