Past simple or past perfect

I was very late. When I arrived, the conference _____.

When he heard the police knocking on the door, he ____ under the bed.

When they arrived at the police station, he said that he _____ anything wrong.

I looked at him and I knew he _____ in a fight, because he had a black eye.

He pulled out a gun and everybody _____ away.

When I was a child, we _____ anywhere at weekends; it was boring.

When he retired he _____ in the company for more than 50 years.

I ______ a movie yesterday

Last year I ______ to Japan

He didn’t pass the exams, because he _____ studied for them

I ____ with my dog yesterday

I called Jim too late, he____