A woman is at the cinema（电影院）, and she is enjoying the film（电影）very much , but there is a man in the next seat（座位）, and he begins looking at the floor under her . The woman is angry（生气）and asks , " What are you doing there ? What are you looking for ? " " A piece of chocolate ," the man says to her . " I dropped it on the floor . " " A piece of chocolate ? " the woman says angrily . " It's dirty now ! Take this and be quiet , please ! I'm listening to the film ! "She gives the man a big piece of chocolate . " But , " the man says , " one of my teeth（牙）is in the chocolate ! "