Answer:
Si yo fuera maestro, nunca les daría tarea a mis estudiantes.
Explanation:
Si yo fuera maestro, nunca les daría tarea a mis estudiantes. This sentence is a conditional. In English it is: If I was a teacher, I would never give homework to my students.
In Spanish conditional is formed with "si" (which works as "if) plus the verb in the tense called in Spanish "pretérito imperfecto del subjuntivo" followed by the "condicional simple".
In this case fuera is in the pretérito imperfecto del subjuntivo, and daría is in the conditional.
