选择方框内最佳选项完成对话。选项中有一项为多余选项。

A. Yes, please. B. At most five. C. You can buy it there. D. How long may I keep them? E. If not, you'll have to pay a fine. F. You can check for them on the computer first.

A：May I help you?

B： I'd like to borrow some books on Western culture and customs. How can I find them?

A：

B：OK. How many books may I borrow at a time?

A：

（Ten minutes later）

B：I'd like to borrow these three books.

A：Two weeks.

B：Two weeks? I'm afraid I can't return them until I've finished my project.

A：In that case, you must renew them before they're due. It's 0.5 yuan a day for each book.