Final answer:
The yo form of the verb comer in the imperfect progressive tense is estaba comiendo.
Step-by-step explanation:
The yo form of the verb comer in the imperfect progressive tense is estaba comiendo. This form is used to describe an ongoing action in the past. For example, if you want to say 'I was eating' in Spanish, you would say 'estaba comiendo'.
Learn more about Verb conjugation in Spanish