La respuesta es "primeras"
Answer:
Beben
Explanation:
Since 'los estudiantes' is considered as 'ustedes' too.
1: la cartera es muy cara
2:costaron un dólar , muy baratos
Son dndndnddndndnssnsndndnddndndmdndnddnnddndnddndndndndndndxnxmxnxnxmxmcmck sorry for the gibberish my answer needs to be 20characters long
Con compañeros is the most appropriate time to use tú form.
All others are professional/require show of respect or usted form.