Mr. Wang and Mrs. Wang lived in a small town. They had a little child and they loved him very much.
One day, Mr. Wang came home very late. He looked for his key to the door, but he couldn't find it anywhere. He lost his key. He knocked （敲）at the door, but no one opened it. He knocked at the door again and again, but nothing happened. Mr. Wang knocked at the window and shouted to Mrs. Wang, but she didn't wake up.
At last, Mr. Wang stopped and thought for a short time. Then he began to speak like their little child. He said,“Mum, I want to go to the toilet. " He spoke quietly, but at once （立刻）Mrs. Wang woke up. She ran fast to open the door and shouted, "I'm coming, my dear!"
