Final answer:
The correct verb to fill in the blank is 'hablaste.'
Step-by-step explanation:
The correct verb to fill in the blank in the sentence is hablaste because it agrees with the subject pronoun 'tú' and is in the past tense. The sentence 'Tú hablaste muy bien en la reunión de anoche' translates to 'You spoke very well at last night's meeting.'
Learn more about Spanish verb conjugation