(I) It is my / your new book.
my
(He) Its / His favourite hobby is tennis.
His
(We) Her / Our favorite movie is Sonic.
Our
(She) His / Her pants are blue.
Her
(They) Your / Their cat and dog are cute.
Their
(You) Their / Your dress is yellow.
Your
(She) Sara is riding her / our bike.
her
(He) His/Her cat is brown.
His
(She) My / Her name is Anna.
Her
(I) It is her/ my dictionary.
my
(We) Those are their / our posters.
our
(You)This is its / your eraser.
your
(She) That's her / my ruler.
her
(He) That's not his / her pencil.
his
(They) This is their / our notebooks.
their
