Составить 10 предложений в Past Perfect

1)He thanked me for what I had done for him.2)After he turned off the light, he left the room. 3)After the sun had set, we decided to return home.4)My parents had returned from their work by the time I came from the school.5)Had she come by 6 o’clock?6)I hadn’t seen him for three days already7)She had finished writing letters by 10 o’clock8)What had been done by that time? 9)He said  thay he had bought a car two week before.10)My friend had rung me up before he went home.