A、She doesn’t need any help. B、She knows he’s very busy. C、He’s already helped her enough. D、He doesn’t know enough chemistry. D

W: I haven’t seen you here for a couple of weeks. Have you stopped eating or something?
M: No. Does it look as if I’ve stopped eating? I’ve been spending a lot of time in the library.
W: Working on a paper?
M: I wish I were working on a paper. I was working on three different papers: anthropology, English literature, and history.
W: Wow. That is a lot of work.
M: Yeah. And what’s frustrating is that I’m studying 19th-century British Empire in all three classes. But I can’t write a single paper for all the three.
W: Why not?
M: The professors won’t let me. Even if I make it three times as long as the suggested length.
W: Oh. That’s too bad. Could you write your paper on three aspects of one topic?
M: Mm. What do you mean? Do you have something in mind?
W: Well, let’s see. Maybe you could do something with Romanticism, like — write your anthropology paper on the cultural basis of Romanticism, and your history paper on the influence of the Romantic poets on the British foreign policy, and OK... and your English paper on analysis of some Romantic poems.
M: Hey, that’s not a bad idea. I’ve already started the research for one of my papers. So I can use that. Oh, it’s so nice! What can I do to repay you?
W: You want to wrap up my chemistry lab for me?
M: I’d love to, but I’ve never taken chemistry. So I’m not sure if you will like the results.
W: Oh, well, not necessary then. Have a good weekend. And try to get out of the library and get some sleep. You look tired. You have big circles under your eyes.
M: OK. I’ll try. See you later.
W: See you.
Questions 23 to 25 are based on the conversation you have just heard.
23. What has the man been busy doing all week?
24. What does the woman suggest the man do to make his work easier?
25. Why doesn’t the woman want any help from the man?