Excuse me, are you going to buy that textbook?
Well, yeah, I need it for a class. But it's awfully expensive.
Oh, we must be in the same class! Civil engineering?
Yes, that's the one!
Were you there last Friday for the first class?
Yes. I only moved here last Monday, and I registered for the class last Tuesday. By the way, I thought Professor Qian really seemed to know his subject.
Yes, his courses are always fantastic, except that he is very strict with his students. Hey, I've got an idea! Why don't we share the cost and use the textbook together?
Sounds great. Then let's sit together next class.