课文 / 短文
The Busy Bee Club met in John Tan's flat yesterday. The children watched television. John heard a noise. — What was that? — I can't hear anything. There's someone outside the door. Look! There are two feet under the door. Yes, I heard someone too. John ran to the door and opened it. There wasn't anyone outside the door. There isn't anyone there. Was there anyone there? No one knows.