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听对话,回答问题。 1. When does the boy go shopping? A. In the morning. B. In the afternoon. C. In the evening. 2. What colour does the boy's mother like best? A. Yellow. B. Red. C. Black. 3. What size does the boy's mother wear? A. Size L. B. Size M. C. Size S. 4. How much is the dress? A. 100 yuan. B. 220 yuan. C. 300 yuan.