помогите пожалуйста срочно ​

1 I went to the cinema with a friend of mine.

2 my parents went on holiday with some friends of theirs.

3 Anna gave me her phone number.

4 whose books are these? Yours or mine?

5 Kevin is going out with his friends this evening.

6 our neighbours have got 3 children, but I don't know their names.

7 they took our car and we took theirs.