Final answer:
The correct form of the verb in the sentence is 'he ido'. It is the first person singular of the present perfect tense of the verb 'ir' (to go) in Spanish.
Step-by-step explanation:
The correct form of the verb in the sentence is he ido. In the sentence, the time cue 'he ido' indicates that the action of going to the store has already happened in the past. The verb form 'he ido' is the first person singular of the present perfect tense of the verb 'ir' (to go) in Spanish. It is formed by combining the auxiliary verb 'he' (have) with the past participle 'ido' (gone).
Learn more about Spanish verb conjugation