Librarian: This is the book you are looking for. Student: ______________Đoạn văn9/55Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best completes each of the following exchanges. Librarian: This is the book you are looking for. Student: ______________ Thank you very much.I couldn’t agree more.That’s a great book.Yes, sure.Giải thíchChọn A