Labor (2) Research (2) Investigación (2) Trabajo (2) Computer science (1) Futures (1) Writing (1) Variations (1) Teaching (1) Teachers--Training of (1) Students (1) Speeches, addresses, etc (1) Rhetoric (1) Production (Economic theory) (1) Occupations (1) Literacy (1) Learning, Psychology of (1) Language teachers (1) Language and languages (1) Good and evil (1) Evaluation (1) Engineering (1) Education (1) Building (1) Bridges (1) Attention (1) Profesores--Formación profesional (1) Profesores de lenguas (1) Expresión (1) Futuros (1)