What is the woman’s reply?

M: Has Professor Arnold from Sydney University arrived?
W: I’ll have to check. Then I’ll get back to you straightway.

M: Good morning. Mary, how’s it going?
W: Pretty good, Bill. How about you?
M: Oh. I’m OK. How is that English class you’re teaching?
W: It’s going really well. I have a great class this year. I’ve got 30 students.
M: That’s good. I love to teach English. I’m only teaching history now.