Final answer:
The correct form of the verb ir to fill in the blank is 'vas'.
Step-by-step explanation:
The correct form of the verb ir to fill in the blank with is vas. The sentence '¿tú a la cafetería ahora?' translates to 'Are you going to the cafeteria now?' In this case, the subject pronoun 'tú' corresponds to the conjugated form 'vas' of the verb ir.
Learn more about The verb ir in Spanish