听力原文: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. Where are Roy and Rock?