A Mochila that’s the correct answer
Verbs ending in -ir that undergo stem changes in the present tense also under go stem changes in the preterite. These verbs have a stem change in the second person formal singular (usted), third person singular (él, ella) and third and second person plural (ellos, ellas and ustedes) forms.
1- le gustan
2- nos gustan
3- le gusta
