Which is the best public place in your country?

please rate my speaking and score my independent speaking task.

18 in 30

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The content is not well organized. Try this pattern for Q1-Q2:

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: Don't need a conclusion. (you can have one only when you don't have something to talk about)

Listen and follow top users:
http://testbig.com/users/aschocolate
http://testbig.com/users/xiaoyangyangyangyang
http://www.testbig.com/users/vanan

and more:
http://testbig.com/speaking-category/toefl-speaking

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Also you have Pronunciation issues like 'international'. You may practice Pronunciation & fluency here:
http://www.testbig.com/pronunciation