【答案解析】[听力原文] 13-16 W: Come in, please. M: Hello, Roy. Where's Alan? I want her to type this letter for me. W: I'm afraid she can't, Rock. She isn't working today. M: Oh, why? Is she ill? W: No. She's preparing for an exam. M: An exam? Is she going to school? W: Yes, she is. She's learning Japanese in night school. M: I see. Are you going to night school, too? W: No, I'm not, not this year. But I'm thinking about taking a course next year. M: That's a good idea. Is it expensive? W: No, not very. Anyway, it's worth it.