1. had finished
2. had been
3. had met
4. had forgotten
5. had studied
6. hadn't rained
7. hadn't paid
8. hadn't done
9. hadn't eaten
10. hadn't bought
11. had visited
12. hadn't used
#2.
1. had spent; wanted
2. had phoned; left
3. turned on; had washed
4. arrived; had already started
5. had come; fed
6. sang; had played
7. watched; had gone
8. had made; phoned
9. was; had sudied
10. had ridden; met