AN ANALYSIS OF TEACHERS’ DIFFICULTIES IN IMPLEMENTING 2013 CURRICULUM IN TEACHING ENGLISH AT SMP NEGERI I SEWON BANTUL IN THE ACADEMIC YEAR 2014/2015 - Pembimbing: Robiasih, Hasti,SURYANTI, YULI,Pembimbing: Karjono, Setyo (Prodi Bahasa Inggris, FKIP, UST, 2015)