The correct infinitive verb about each sentence in the audio is:
Translation.
Infinitive verbs in Spanish.
Spanish infinitive verbs are characterized by the endings -ar, -er, -ir, as shown below:
Therefore, conjugated verbs, when converted to their infinitive form, will always have one of these endings. On the other hand, the sentences heard in the audio of structure 4.2 of lesson 4 on stem-changing verbs are:
Taking into account the verb in each sentence, we proceeded to use its correct infinitive form to fill in the blanks in the exercise.
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