The sentence that contains both an irregular verb and it is in imperfect tense is "Mi madrastra Eloísa era una mujer fuerte y estricta"
These are verbs that do not have a specific conjugation pattern. In the Spanish language, this category includes the verbs:
This is a tense commonly used to talk about past actions. Here are some examples:
Based on this the sentence with an irregular verb and an imperfect tense is "Mi madrastra..." because the verb "ser" is irregular and "era" is the imperfect tense conjugation.
Note: This question is incomplete; here is the missing section:
Los músicos de la recepción fueron chistosos.
Mi doctora me receta vitaminas porque estoy débil.
Mi madrastra Eloísa era una mujer fuerte y estricta.
Tu madrina y yo hablábamos con la ahijada antes de la boda.
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