study single subject or different subject

17 in 30

The introduction is too long.

Try this pattern:

first 1-2 sentences: introduction. my opinion: A or B. agree or disagree. about 5-10 seconds
First, reason 1 and the example: about 15 seconds
Second, reason 2 and the example: about 15 seconds
Third, reason 3 (optional)
Conclusion: one sentence.(optional)

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