M: You look pale, Linda. Is everything all right? W: No. I lost my textbook on my way back from school. M: Did you stop by any place? W: Yes. I stopped by a post office to buy some stamps. M: Think carefully whether you put your book down. W: Maybe you are right. I will go back and see if it is still there. Thank you., Question: Why did Linda look pale? (A) She lost her bag. (B) She lost her way. (C) She lost her book.
(C) She lost her book.