听下面一段材料，回答第1-3题。 1. What is Tom doing? A. He is painting a picture. B. He is painting the house. C. He is painting the fence. 2. What is Mum going to help her son with? A. She is going to clean the house. B. She is going to buy a carpet. C. She is going to make some curtains. 3. Why does Tom say sorry to his mum? A. Because he made the house different. B. Because he dropped some paint on the carpet. C. Because he used a color his mum doesn't 1ik