1. Right answer.
estuvimos
Estuvimos is the conjugation of the verb estar for the first person plural in the preterite tense. The preterite tense is one of two simple past tenses. It is used to describe actions that took place or were completed at a certain point in the past. Also, the verb estar is being used here as location, describing where we were temporarily. So:
Nosotros estuvimos en el hotel
2. Right answer.
puso
Puso is the conjugation of the verb poner for the third person singular in the preterite tense. So the action to put the letter in the envelope was completed at a certain point in the past by Reinaldo. Therefore, the word puso tells us that this sentence is given in the preterite. Finally:
Reinaldo puso la carta en el sobre.
3. Right answer.
pusimos
Pusimos is the conjugation of the verb poner for the first person plural in the preterite tense. So the action to put the address in the envelope was completed at a certain point in the past by us. It is important to say that this is an irregular verb. So, you need to learn by heat conjugations of irregular verbs. Finally:
Nosotros pusimos la dirección en el sobre.
4. Right answer.
puse
Puse is the conjugation of the verb poner for the first person singular in the preterite tense. So I carried out the action to put suitcases in a room and this was completed at a certain point in the past. In Spanish, sometime we can take away the subject pronoun of sentences. Therefore, these two sentences are correct:
Yo puse las maletas en mi habitación
Puse las maletas en mi habitación
