Listening Quiz: Sửa Vấn Đề Kính Hiển Vi – Easy Level

1. What is the conversation mainly about?
2. What did William say was wrong with the microscope at the beginning?
3. What did Laura ask William to check first?
4. What can be inferred about the microscope after William fixes the bulb?
5. Why does Laura tell William to open the bulb cover?

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