1. El profesor tiene tiza.
Answer 1: Es su tiza.
Translation 1: The teacher has chalk. It is his chalk.
2. Tú tienes mochilas.
Answer 2: Son tus mochilas.
Translation 2: You have backpacks. They are your backpacks.
3. Los turistas tienen mapa.
Answer 3: Es su mapa.
Translation 3: Tourists have a map. It is their map.
4. Usted tiene cuadernos.
Answer 4: Son sus cuadernos.
Translation 4: You have notebooks. They are your notebooks.
5. Nosotros tenemos papelera.
Answer 5: Es nuestra papelera.
Translation 5: We have a trash can. It is our trash can.
In Spanish, possessives adjectives indicate possession or belonging. They always agree in gender and number with the noun to which they refer; that is, with the possessed thing. The possessive adjective appears before the noun with which a relationship of belonging is established. If the noun is omitted, then it would be a possessive pronoun.