Написать 10 предложений по британскому в Past Perfect

1. The book hadnt been written by 1980.
2. She had finished writing letters by 10 oclock.
3. Had the train arrived by that time?
4. I hadnt bought the presents by that time.
5. What had been done by that time?
6. Why hadnt you got to the station by then?
7. The play had already finished when my parents arrived.
8. Mary bought a new ring yesterday, as she had lost her old one.
9. As I hadnt got him on the telephone, I sent him a message.
10. We had hardly arrived at the hotel, when it started to rain.