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.
