Final answer:
To complete the sentence, 'Yo ___ catorce años,' we need to use the correct form of the verb 'tener' (to have) to match the subject 'Yo' (I). The correct form is 'tengo,' so the complete sentence is 'Yo tengo catorce años,' which translates to 'I am fourteen years old.'
Step-by-step explanation:
To complete the sentence, 'Yo ___ catorce años,' we need to use the correct form of the verb 'tener' (to have) to match the subject 'Yo' (I). The correct form is 'tengo,' so the complete sentence is 'Yo tengo catorce años,' which translates to 'I am fourteen years old.'
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