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.
The answer is Cuba. Hope this helps
1.¿cuando piensas terminar tu carrera?
2.¿que clases vas a tomar el próximo semestre?
3.¿por que quieres estudiar en España?
4.¿prefieres estudiar en Madrid o en en Sevilla?
5.¿puedes describir tu personalidad?