听材料,回答问题。 1. What was the boy’s mother doing when the boy left her? A. She was trying on a dress. B. She was talking with a lady. C. She was buying a white cap. 2. What color are the boy’s pants? A. Light blue. B. Green and white. C. Black and white. 3. Where can the boy’s mother find him? A. At the gate of their house. B. At the clothing part. C. At the gate of the supermarket.