Giúp mình với
gạch chân.Câu nào là mệnh đề ko xác định và câu nào là mệnh đề xác định
6. ba whose mother is my teacher is reading books
7. kangaroos which come from australia have long tails
8.Ba who lives on trang tien street likes playing the guitar
9. the novel that you gave me on my birthday has been lost
10. neil armstrong ,who first walked on the moon lived in the usa
11. the chair that i bought yesterday is broken
12. miss lien, who sings very well is my english teacher
13. viet nam, which is in south-east asia exports rice