chose a topic by yourslf.
total 5 paragraphs.
1.Introduction (background,thesis)(4 sentences)
2 Body (3 paragraphs ,at least there are 5 sentences for each paragraph)
              (The first two paragraphs should include topic sentence and supporting detail.)
              (The 3th pargraphs is written in counter argument and topic sentence)
3.Conclusion （restate thesis， suggestion）
                           （4 sentences）