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Subject: Proposal for Debate on City Traffic  

Dear Professor Smith,  

I am writing to propose a debate on the topic: "Should private cars be banned from city centers?" This issue is highly relevant, as it addresses urban congestion, pollution, and sustainable transportation. It encourages students to explore both environmental benefits and potential economic impacts.  

For the arrangement, I suggest dividing the class into two teams: one supporting the ban and the other opposing it. Each team will have 10 minutes for opening statements, 15 minutes for rebuttals, and 5 minutes for closing remarks. A moderator will ensure a smooth flow.  

I look forward to your feedback.  

Best regards,  
Li Ming

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