Past Perfect and Past Perfect Continuous

1. He had married her two years before we met. 2. James told me you had bought the old vicarage two years before your son’s birth. 3. I wish we had bought it before. 4. When I arrived at the station, the train had left. 5. He had been playing tennis for 4 hours when he broke his leg. 6. The dog came into the house once she had finished the housework.