Спо ! нужно составить 5 предложений по правилу past perfect

1) I had been in the office by 7 a.m already.
2) I had already finished my work by the time he came
3) He wanted me to join the tennis club. But I had already joined the football club 
4)  I wanted to go to school with him. But he had already gone.
5) My parents had returned from their work by the time I came from the school