Listening Quiz: Giải Thích Điều Trị Tủy Răng – Easy Level

1. What is the conversation mainly about?
2. What does William say they do first?
3. How do they help Olivia avoid pain during the cleaning?
4. How does Olivia probably feel after hearing William’s explanation?
5. What does William say happens after they remove the damaged part inside the tooth?

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