15. A) He needs help to retrieve his files.

　　B) He has to type his paper once more.

　　C) He needs some time to polish his paper.

　　D) He will be away for a two-week conference.

　　答案

　　C) He needs some time to polish his paper.

　　原文

　　15. M: Professor Johnson, last night when I was putting the finishing touches on my paper, a computer failure completely wiped out my files, do you think I can have another day to retype it?

　　W: Im sorry, Rod. Im leaving for a conference tomorrow and Ill be away two weeks. I suppose you could send me an E-copy.

　　Q: Why does the man say he cant submit his assignment on time?