1. If today were Sunday, the pupils could go swimming
2. If i knew the answer, i could tell you
3. If he had hurried, he wouldn't have missed the train
4. If we had had a map, we wouldn't have got lost
5. If it hadn't rained, we would have gone
6. If we had had enough money, we would have gone on holiday
7. If Susan hadn't eaten four cakes, she wouldn't have felt sick
8. If Peter didn't eat so many chips, he wouldn't be fat
9. If he had prepared for the interview, he would have got the job
10. If i didn't have a headache, i could go swimming
11. If my brother had left the car keys, i could have picked him up at the station
12. If he hadn't been late yesterday, he wouldn't have lost his job