Final answer:
The appropriate form of the verb in this sentence is 'comíamos'. The verb 'comer' is in the imperfect tense because it describes a habitual action that the subject used to do in the past.
Step-by-step explanation:
The appropriate form of the verb in this sentence is comíamos. The verb comer is in the imperfect tense because it describes a habitual action that the subject used to do in the past. In this case, the subject is nosotros (we), and the correct form of the verb is comíamos (we used to eat).
Learn more about Appropriate usage of preterite and imperfect verbs in Spanish