Final answer:
The imperfect tú form of the verb ser is eras.
Step-by-step explanation:
The imperfect tú form of the verb ser is eras. In Spanish, the verb ser means 'to be' and its imperfect form is used to describe ongoing actions or states in the past. For example, 'Tú eras estudiante' translates to 'You were a student'.
Learn more about imperfect tú form of the verb ser