Teacher-students interaction in english teaching learning process according to flint system ( a descriptive study at the eleventh grade student of SMA Al Abidin Bilingual boarding school of Surakarta in 2013/2014 academic year) - Dwi Yuliyanti (Jurusan Pendidikan Bahasa Inggris Fakultas Ilmu Tarbiyah dan Keguruan IAIN Surakarta, 2015)