2. We wouldn't have lost our way if the night hadn't been so dark.
3. They would have us some information if there were anything to send.
4. You would find your fountain-pen if you looked for it better.
5. I would have recognised him at once if it hadn't been so dark in the room.
6. The accident wouldn't have happened if the driver had followed the traffic rules.
7. She would have made toasts for them if something hadn't gone wrong with the gas-stove.
8. If I had had my own interests, I would have come.
9. If it hadn't been raining so beastly yesterday, we wouldn't have stayed at home.
10. If he had experimented alone, he would never have finished the work.
11. If no one had come, they would have postponed the meeting.
12. If you hadn't interrupted him, he would have continued his work.