فهرس المقالات Student Talking Time (STT) حرية الوصول المقاله صفحة الملخص نص كامل 1 - The Ratio of Teacher Talking Time (TTT) to Student Talking Time (STT) in Iranian EFL Classes: An Observational Multi-Class Analysis Kamran Rabani EbrahimiPour Neda Fatehi Rad Ehasn Rayani