Listening Quiz: Hướng Dẫn Khử Trùng Cho Nhân Viên Vệ Sinh – Advanced Level

1. What is the conversation mainly about?
2. Which areas need special disinfectants and extra care?
3. How often should these areas be cleaned?
4. What should workers do with waste from these areas?
5. What can be inferred about the cleaning staff’s work environment?

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