A、Three weeks. B、One month. C、Three months. D、Over a year. C

M: Hi, Annie. You must be pretty excited about your trip to South Korea. When are you leaving?
W: In three weeks. And I am really excited. You know, I have always been dreaming about it. But there are still a few things left to do before I go.
M: Like what?
W: Like renewing my passport, going to the travel agency to buy my plane ticket and figuring out what to do with my apartment while I am gone.
M: Are you going to give it up?
W: No. It’s not easy to find such an apartment around here. But I don’t like the idea of paying three months’ rent on an empty apartment either.
M: Perhaps you could sublet it.
W: Yes, but to whom?
M: Mm let me think. Oh, I know just the person. My sister’s friend, Angela, has been invited to our university as a visiting scholar for about that long. She will be arriving in about three or four weeks.
W: That’s great. I’ll call the landlord to ask for permission.
M: And I’ll mention it to my sister this evening.
W: Thank you, Bill, let me know what happens then.