Mệnh đề quan hệ, This is an old house. I bought it yesterday, the boy is singing. He is my brother, Dương is so lazy. He is my friend, Tú is so stupid. She is my sister Mệnh đề quan hệ

12 This is an old house. I bought it yesterday
12 This is an old house. I bought it yesterday
13 the boy is singing. He is my brother
14 Dương is so lazy. He is my friend
15 Tú is so stupid. She is my sister
Mệnh đề quan hệ