随风去

A: I wish I hadn't throw away that list of books.
B: I thought of it may be useful,so I take it from my water paper basket.
A: Oh,that's very kind of you. Can I get it back now?
B: Of course,here you are. By the way,how can you read so many books when you have to study all day long?
A: It takes time,but I'm not in a hurry to read them all.They'll be helpful in my later study.
B: You're right.Maybe I'll need some of them.
A: Then we can share these books.
B: Good idea.