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… que otorga la organización ELTons del Reino Unido. About the author Professor Castillo holds a Ph.D and an M.A. from The University of Texas at Austin. He studied philology and Languages at Universidad Nacional de Colombia. He teaches at the … Bogotá, Colombia. He has taught at the undergraduate TEFL program and directed the foreign language institute of the same university. He belongs to the research group “Teacher Education” and belongs to the scienti�c committees of the Journals HOW, … of the Claire de Silva National Award for services to the TESOL profession. Fulbright scholar and lecturer at The University of Texas at Austin. Guest lecturer at Universidad Nacional de Colombia, Universidad Ponti�cia Bolivariana, …