| Abstract: | Mr and Mrs Brown lived in a small house with their child. Sometimes Mr Brown came back from work very late,when his wife and the child were asleep,he opened the front door of his house with his key and came in very quietly. But one night when he was coming home late,he lost his key,so when he reached his house,he rang the bell. Nothing happened. He rang it again,and nothing happened—nobody moved inside the house. Mr Brown knocked at the bedroom window,he spoke to his wife,he shout- ed,but she did not wake up. At last,he stopped and thought for a few |
