... focuses on how to use authentic materials to supplement the textbook in teaching speaking skill to grade- 12 students in Gia Binh II High School (GB II HS), Gia Binh District, Bac Ninh Province The ... in Gia Binh II High School, Gia Binh District, Bac Ninh Province To investigate the use of authentic materials to supplement the textbook in teaching and learning speaking skill in the target ... learning speaking skill of teachers and grade- 12 students in Gia Binh II High School, Bac Ninh Province To investigate the problems of textbook faced by the teachers and grade- 12 students in Gia...