Possessive nouns and adjective

I am Rodrigo's colleague.

We are Marty's classmates.

This is Sara and Todd's neighbor.

Mr. Smith is Kate's boss.

This is Karina's laptop.

Mary is Aldo's wife.

I am Mr. Alvarez student.

I am his student.

Matry is our classmate.

This is their neighbor.

This is her laptop.

Rodrigo is my colleague.

She is his wife.

Mr. Smith is her boss.