밑줄 친 부분에 들어갈 말로 가장 적절한 것은? A: Hi, John. Time flies. The winter break is just around the corner. B: Yes, it is. I’m looking forward to it. A: Do you have any special plans? B: Oh, sure! I’m thinking about spending my break volunteering abroad. A: Again? I know you volunteered in Vietnam last summer. Don’t you have to spend your own money? B: Yeah. But ________________________. I’ve learned a lot through the experience. A: Oh, I see.