Is "Esta piña es mi piña" correctly written

Question 2 (fill-in-the-blank worth 1 points) fill the blank with the correct form of the verb in the preterite. ellos limonada. (beber) answer for blank 1: question 3 (fill-in-the-blank worth 1 points) fill the blank with the correct form of the verb in the preterite. nosotros libro. (abrir) answer for blank 1: question 4 (fill-in-the-blank worth 1 points) fill the blank with the correct form of the verb in the preterite. tú maletas. (subir) answer for blank 1: question 5 (fill-in-the-blank worth 1 points) fill the blank with the correct form of the verb in the preterite. luisa carta a su amiga sandra. (escribir) answer for blank 1: question 6 (fill-in-the-blank worth 1 points) fill the blank with the correct form of the verb in the preterite. la escalera. (subir) answer for blank 1: