Cuando ellos al segundo piso, ¡se encontraron en una fiesta de sorpresa para Toño! (subir) •Prueba, los verbos regulares -AR/-ER/-IR -PRETÉRITO

The ight answer is, Subieron.

* Cuando ellos subieron al segundo piso, ¡se encontraron en una fiesta de sorpresa para Toño!

Explanation:

Because an action performed in the past tense is being described that does not yet have its definite end, so it is important to identify the person, gender, time and number in the sentence in this way it is possible to correctly conjugate the verb in the sentence and have coherence with what is being expressed.

answer: a) miré

una noche yo miré a un fantasma en casa de mis abuelos.

one night i looked at a ghost in my grandparents' house.

explanation: the action happened only once, so the verb must be conjugated in the preterit.

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these are the words to choose from to people answer the question:

nieta--yerno--tia--tio--primo--nuera--abuelo--cunada