Answer: Although you have not provided the list of words, I have been able to locate them. I provide them below, together with my answers (assuming that you have to use the so-called perfect preterite, which can be compared to the past tense that is used in English):
Words: adolescencia // aniversario // boda // casarse // // celebrar // comprometerse // enamorarse // graduarse // jubilarse // nacer // niñez // salir
En mi ADOLESCENCIA me gustó mucho SALIR con mis amigos. CELEBRAMOS cualquier cosa: una victoria en un partido, un aprobado en un examen, etc. A los dieciocho años me ENAMORÉ de Manuela, y me COMPROMETÍ con ella. Nos CASAMOS enseguida, y nunca nos hemos separado. Nuestra BODA fue muy sencilla, pero lo pasamos muy bien. Unos años más tarde nos GRADUAMOS en la universidad, y los dos llegamos a ser unos buenos profesionales.
Explanation: Just to elaborate a little bit more on the answer, it can be added that in this exercise they have asked you to form sentences using the past tense. Please note that in Spanish there are several tenses of preterite, such as the imperfect preterite and the perfect preterite. The one that we have used here refers to actions that occurred and were completed in the past, since the speaker, who is 80 years old, is referring to the most important events of his/her life.