1. If we had not missed our train, we would not be late for the conference.
2. If she had not failed her exams in maths, she would not have to take the exam again.
3. If they had told us the truth, we would know what to do.
4. If the plane had arrived on time, we would not have problems with our luggage.
5. If I had had any time for the picture gallery, I would know everything about this modern artist.
6. If the party had been a success, they would not arrange another party.
7. If we had gone to Brighton, we would look suntanned at all.