Answer:
In order to successfully complete this exercise, you have to complete the sentences given by providing the correct inflection of the verb tener (have) in the first section of each one of the exercises, followed by an appropriate possessive adjective for the second section of each exercise. Note that, in order to choose the correct inflection of the verb and the correct possessive adjectives, you will have to pay particular attention to the gender and number of the subject of each sentence.
Explanation:
María y tú tienen un hermano. Es su hermano.
Nosotras tenemos unas mochilas. Son nuestras mochilas.
Usted tiene dos sobrinos. Son sus sobrinos.