Final answer:
The correct verb form is 'fuiste'.
Step-by-step explanation:
The correct verb form to complete the conversation is fuiste as it agrees with the second person singular pronoun 'tú' which is the subject of the question. The verb 'fuiste' is the preterite form of the verb 'ir' (to go) in Spanish. When talking about oneself, the appropriate verb form would be 'fui'. Therefore, the correct sentence would be '¿Dónde fuiste a escuchar a los escritores leer sus cuentos?
Learn more about Spanish verb conjugation