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information from them. Observation: Observe the four pictures on Page1. Try to divide them into two parts. Ads for social problems Ads for sales Earth Day Say ‘No’ to drugs Oxlin Airlines Soft shine shampoo Discuss and speak: Read the instructions and focus on the four posters. Try to answer these questions: What image(s) can you see on each poster? What can you read on each poster? What can you learn from each poster? Commercial advertisements Public service adve