a Correlational study between students'mastery of simple present tense toward their achievement in writing descriptive text of the eighth grade students of SMPN 1 Gesi in the academic year of 2014/2015 - Riqi Novi Fajar Aggy (Jurusan Pendidikan Bahasa Inggris Fakultas Ilmu Tarbiyah dan Keguruan IAIN Surakarta, 2015)