1. Long, who is good at English, can talk to foreigner
2. That man, who is a friend of mine is a famous teacher
3. That boy, whose name is Phong, stay near my house
4. The girl whose dog is so cute is good at speaking French
5. The computer which is being learned by Hoa is so useful
6. The woman who is hugging her son is so friendly
Best regards,
Anynomus