听力题 W: David! Can I give you a hand with one of those grocery bags? M: Sure, Nancy! Could you take this one, please? I didn''t realize how heavy these bags would be. W: Why did you buy so much stuff when you have to walk home from the store? M: Well, I didn''t intend to buy a lot — but I''m having some people over and I guess I needed more than I expected. W: What''s the occasion? M: The people I live with, the Kramers, have been on vacation for a month and I thought I''d surprise them. I''m inviting some of their friends and family for a welcome-home dinner. W: That''s really thoughtful of you. M: I figure it''s the least I can do for them. They''ve been letting me stay with them rent-free while I''m in school. W: Really? That''s pretty generous of them. M: Well, they understand how difficult it is to make ends meet when you''re a student. They''ve been such a big help to me, I thought that this might be a small way to thank them for their generosity.