Decide whether the sentence is correct or incorrect as written. Ellos vivió en el sótano.

The sentence is incorrect because ellos means “they,” so the verb must be plural as well. In the preterite of vivir, the correct third-person plural form is vivieron, not vivió, which means “he/she/you (formal) lived.” The corrected sentence is “Ellos vivieron en el sótano.”

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