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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? | 
