根据对话内容，从对话后的选项中选出能填入空白处的最佳选项。

--   1 

-- I want to borrow a book. Can you recommend(推荐) an interesting one?

--   2 

-- I like story and travel books.

-- Have you read “The Red and Black”?

-- Oh, yes I have. I want a book by Mark Twain.

--   3 

-- “The Adventure of Tom Sawyer”.

-- All right. I’ll get it for you.

--   4 

-- You may keep it for two weeks.

--   5  

-- You may come and renew them.

-- Thank you for your kind help.

-- You are welcome. Good-bye!

-- Good-bye!

A．What do you want?

B．Of course, I can. But tell me first what kind of books you like to read?

C．How long may I borrow the book?

D．Thanks a lot. How long may I keep the book?E. What if I can’t finish on time?

F. Good morning! What can I do for you?

G. What’s the title of the book?