根据中文提示，把对话中缺少的内容写在线上。这些句子必须符合英语表达习惯。打句号的地方，用陈述句；打问号的地方，...
未知题型根据中文提示，把对话中缺少的内容写在线上。这些句子必须符合英语表达习惯。打句号的地方，用陈述句；打问号的地方，用疑问句。
提示：Jack去图书馆借书，但没有借书证(library card)。图书管理员Linda为他办理了借书证，并告诉他每本书可借两个星期，如果需要，可以续借。
Linda: Good morning. 51 ?
Jack: Yes, l want to borrow a book.
Linda: 52 ?
Jack: No, I don't have one now. 53 ?
Linda: Well, please fill in this form first.
Jack: OK. (A few minutes later.) Here's the completed form.
Linda: Thanks. The card will be ready in thirty minutes, and you can take it later.
Jack: Thank you. By the way, 54 ?
Linda: Well, two weeks. But then, you can renew the book if you still need it.
Jack: I see. Thanks a lot.
Linda: 55 .
