I got this correct in the quiz b/c I followed the hint but I don't understand the use of Imperfecto over Indefinido here if there is a specific time period in the past identified. Why trabajaba rather than trabajo? (I know the hint says "used to" but the question still stands.) Thank you!
En el año 2010, usted ________ para una escuela primaria.In 2010, you used to work for a primary school.HINT: Conjugate "trabajar" in El Pretérito Imperfecto.