听力原文：M: Hello. Matt Ellis speaking. W: Hello, Dr. Ellis, my name's Mary Johnson. My roommate, Janet Holms, wanted me to call you. M: Janet Holms? Oh, that' s right she' s in my class. Has anything happened to her? W: Nothing, it's just that she submitted a job application yesterday and the company asked her in for an inter- view today. She' s afraid she won't be able to attend your class this afternoon. I'm calling to see if it would be. okay if I gave you her essay. Janet said it's due today. M: Certainly. Uh, you can either drop it off at my class or bring it to my office. W: Would it be alright to come by your office around 4:00? It's impossible to come any earlier because I have three dames this afternoon. M: Uh, I won' t be here when you come I'm supposed to be at a meeting from 3 to 6, but how about leaving it with my secretly? She usually stays until 5:00. W: Fine please tell her I'll be there at 4:00. And Dr. Ellis, could you tell me where your office is located? M: I'm in Room 302 of the Gregory Building. I'll tell my secretary to put the paper in my mail box, and I'll get it when I return. W: Thanks a lot! Janet was worried about not getting her paper in on time. M: No problem. I'll look for Janet's paper later this evening. Good-bye, Ms. Johnston. W: Bye, Dr. Ellis. Why couldn't Janet come W the class of Dr. Ellis?