1.This is the man. I met him in Paris.
This is the man I met in Paris.

2.I wanted the painting. You bought it.
I wanted the painting you bought.

3.This is the chair. My parents gave it to me.
This is the chair my parents gave to me

4.She's the woman. She telephoned the police.
She’s the woman who telephoned the police.

5.He's the person. He wanted to buy your house.
He’s the person who wanted to buy your house.

6.We threw out the computer. It never worked properly.
We threw out the computer which never worked properly.

7.This is the lion. It's been ill recently.
This is the lion being ill recently.

8.The man was badly injured. He was driving the car.
The man driving the car was badly injured. 

9.The children broke the window. They live in the next street.
The children living in the next street broke the window. 

10.That's the woman. I was telling you about her.
That’s the woman I was telling you about.