A、He lost everything including his computer. B、He suffered from a serious car accident. C、He went abroad to join his family. D、H

W: Hello, Dr. Christianson.
M: Hello, Cathy, what can I do for you?
W: Well, [22] I need an extension for my report on whales. Next Wednesday I am supposed to present in class and hand my report in, but I won’t be ready.
M: You had six weeks to work on this, and [23] I have a policy of penalizing heavily for late assignments. You lose 20% the first day, and 10% for each day after.
W: Well, my computer broke down and I lost everything. I have taken the computer into the Campus Computer Center but they cannot retrieve any of my files.
M: [24] 1 can sympathize with the computer issue, because it happened to me once when I was a student. My computer crashed just as I was on the last page of a 10,000-word essay. I assume this will be a lesson to you.
W: Oh yes.
M: Well, let’s look at the calendar and see if there is another opportunity for your presentation and report.
W: What about on November 29?
M: Let me see, no, that wouldn’t work as Jane Clark is doing her presentation that day.
W: I’m not sure I can get it finished much sooner as I have to start writing the report from scratch.
M: Well, perhaps I can allow you to hand in your report on November 29, but the presentation must be sooner. Looking at my calendar, the only possible day would be November 22. [25] Rob Metcalf was supposed to present that day but I understand he was in a serious car accident and had to withdraw from university.
W: I didn’t know that.
M: So, we have arranged for you to present on November 22, and hand in your report on November 29.
W: Thanks again, Dr. Christianson.