Listening Quiz: Chiến Dịch Tiêm Chủng Bổ Sung cho Thiếu Niên – Easy Level

1. What are Olivia and William mainly discussing?
2. What will William do to help identify the students who missed their shots?
3. When do Olivia and William suggest holding the campaign?
4. Why does Olivia say they must remind students to bring their cards?
5. What can be inferred about the campaign location?

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