A:H, Nick. ?
B:This Sunday?Oh, I'm going to the bookstore.
A: ?
B:Because my sister's 15th birthday is coming. .
A:Sounds like a good idea. Have you decided which book to buy?
B:Not really. But I hear The Adventures of Tom Sawyer is a very interesting novel. ?
A:Yes, I have already read it twice. It's one of my favorite books.
B:Really? ?
A:It's really interesting. I think your sister will love it if she reads it.
B:Great!Then I will buy it this Sunday.