M: Every boy and every girl is going to go camping tomorrow. Can I go with them? ,F: You can when you finish reading the book borrowed from the library yesterday, son.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: You promise to let me go with them once I finish reading the book, right? (C) M: OK, I'll finish reading the book and then I'm going to borrow more books from library with my friends. (D) M: Great, I'll finish that after I get back from camping, I promise.
B