Es el libro de mi amigo. es libro. mi tu su nuestro

Su is the correct answer.
In Spanish it’s: Es mi libro de amigos. Es su libro
English: It’s my friends book. It’s his book.

Agame in which two or four players strike a ball with rackets over a net stretched across a court. the usual form (originally called  lawn tennis  ) is played with a felt-covered hollow rubber ball on a grass, clay, or artificial surface.

Where is the audio? ?