Help me pleac !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Read the sentences and write the right form of the possessive pronoun or the possessive adjective.

Lucy and I have got the same friend. This is ________ friend.
Are those books of your friends? – No, those books are not ________.
Are these her shoes? – Yes, they are ______.
This is my pen. It’s ______.
Are these his coins? – Yes, they are ______.