Final answer:
The correct form of the verb in the sentence is 'volví', which means 'I returned'.
Step-by-step explanation:
The correct form of the verb in the sentence is volví. The verb 'volví' is the first person singular form of the past tense of the verb 'volver', which means 'to return' in English. In the context of the sentence, it indicates that the speaker returned to their home after volunteering in Peru for two months.
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