听对话,回答问题。 1. How old is the man now? A. 22. B. 24. C. 26. 2. What are they talking about? A. Saving water. B. dealing with the rubbish. C. Water pollution. 3. What does Linda advise us to do to fight against pollution? A. To use plastic bags for shopping. B. Don't use dustbins. C. To put litter in the dustbin..