Replace the personal pronouns by possessive pronouns.

This book is (you) (a)   .

The ball is ( I ) (a)   .

The blue car is ( we) (a)   .

The ring is (she) (a)   .

We met Paul and Jane last night. This house is (they) (a)   .

The luggage is (he) (a)   .

The pictures are (she) (a)   .

In our garden is a bird . The nest is (she) (a)   .

This cat is (we) (a)   .

This was not my fault . It was (you) (a)   .