Are my sentences correct?

I would ask you to correct my sentences.

1- When the house had been searched, police found over two hundred cats living (or just living?) (or - which were living) in terrible conditions.

2- The eggs were taken from the eagle's nest. Police believe they will now be (or - they'll be) smuggled out of the country and sold abroad.

3- I just heard on the news that someone was arrested and charged with the murder.

4- He was released last Friday after a year in the prison.

5- With the recent investment in the area, plenty of new jobs have been created.

6- When the police raided the farm, they found crocodiles in the lake.

7- He's an amazing performer. His show really has to be seen to be believed.

8- I don't know why he was surprised they sacked him. He has been given several warnings about lateness.