The correct preterite form of the verb "aprender" is "aprendí," as it indicates that the action of learning occurred in the past. The sentence becomes "Yo aprendí mucho en la clase de física." This choice directly aligns with the context of the sentence. ;
The correct form to fill in the blank is 'aprendí,' making the complete sentence 'Yo aprendí mucho en la clase de física.' This form reflects a completed action in the past, as indicated by the use of the preterite tense.
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