Hello, I am a Spanish speaker and would like to help you. The question in this problem is to form sentences using the verbs ser and ir in the preterite. First of all, let me explain what is the preterite. In Spanish, the preterite tense (el pretérito) is used to describe actions completed at a point in the past. So the Spanish preterite is not used to describe regular or continuous actions in the past with no specific beginning or end. In that case, we use the imperfect. Therefore, we use the preterite to talk about completed actions in the past. So, it is used to talk about beginnings and ends, things that occurred on specific dates or days, at specific times or during specific time periods, and events in a sequence. There are two forms in this verbal tense, namely: Regular Imperfect Forms and Irregular Imperfect Forms
The verbs ser and ir are irregular. The conjugations of these verbs are illustrated in the Table below. Keep in mind that ser and ir have the exact same forms in the preterite.
Therefore, solving this problem we have:
1. dos amigos y yo / ir / Machu Picchu / el verano pasado
<em>Dos amigos y yo</em><em> fuimos </em><em>a Machu Picchu el verano pasado</em>
2. las vacaciones / ser / maravillosas
<em>Las vacaciones </em><em>fueron</em><em> maravillosas.</em>
3. yo / ir / al Parque Nacional del Manu / también
<em>Yo </em><em>fui</em><em> al Parque Nacional del Manu también.</em>
4. la gente / ser / muy simpática
<em>La gente</em><em> fue</em><em> muy simpática.</em>
5. ¿adónde / ir / tú / de vacaciones / el año pasado?
<em>¿Adónde </em><em>fuiste</em><em> de vacaciones el año pasado?</em>