Listening Quiz: Trả Lời Câu Hỏi Khó tại Hội Nghị – Easy Level

1. What is the conversation mainly about?
2. According to David, how did his team get their data?
3. What does David say makes his method better?
4. What can be inferred about Laura’s reaction to David’s answers?
5. Why does David say he is happy to help?

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