The salesperson who helps you out in a store is called un

¿qué te __ tus abuelos con el pastel de cumpleaños? sirve sirvo sirves sirven

Mis hermanos y yo a las cinco y media para ir a la escuela. a. te despiertas c. se despiertan b. me despierto d. nos despertamos

Does anyone know what my spanish teacher means by this? i need to use plural forms of the verb ser. and she asked me to use a couple of adjectives to describe the boys collectively and then the girls collectively?