Necesito terminar esta tarde (1) (mi, tu, su) tarea de cálculo para mañana y no tengo (2)
(mi, tu, tus)
calculadora. Tú tienes una, ¿no? ¿Necesitas (3) (mi, tu, su) calculadora hoy? Gracias. Otra cosa (Another thing):
tienes un mensaje telefónico (phone message) de (4) (nuestros, tus, sus) padres. Es (5) (mi, tu, su)
aniversario (anniversary) este sábado y preparan una fiesta,

Possessives are words that are intended to denote the possession a subject has of an object, situation, or other in a sentence.

According to the above, the correct words are: mi, mi, tu, tus, and su.

Mi, is a possessive denoting first person possession, so the author refers to his calculus homework and his calculator in the first two sentences.

Tu, is a possessive that denotes the possession of the second person in the singular and refers to the question: (¿Necesitas tu calculadora hoy?)

Tus, is a possessive that denotes the possession of the second person in the plural and refers to the phone message from the parents of the other person (...tienes un mensaje telefónico de tus padres.)

Su, is a possessive that denotes the possession of the third person plural and refers to the anniversary of the parents of the other person. (Es su aniversario este sábado y preparan una fiesta,)

Learn more about possessives in: https://brainly.com/question/839097