3. Sarah is from Australia. She's Australian.
4. Li Ping is from China. She's/He's Chinese (не знаю мальчик или девочка).
5. Vlad and Oksana are from Russia. They're Russian.
6. Raj and Sanjeet are from India. They're Indian.
7. Harry is from the USA. He's American.
8. Leticia and Pedro are from Mexico. They're Mexican.