I think he must have been. Professor Dolohov worked with so many people in the Council and he's such good mates with people like the Malfoys and Professor Raz. I can't imagine that he didn't teach Regulus too. And there was the way he reacted when I started talking about it.

I'm not going to keep reminding him, though, believe me.

I still don't really see why everyone liked him so much

Anyway. You'll be fine, too. With OWLs, I mean.