Ответ:

1. If you had put on warmer clothes yesterday, you wouldn't have caught a cold and (wouldn't have) had a high temperature.

2. The dentist wouldn't have pulled out your tooth if you hadn't eaten so much sweets.

3. If you hadn't been so careless, you wouldn't have fallen ill with flu.

4. You would have been cured already if you had followed the doctor's orders.

5. If you had followed all the doctor's instructions from the very beginning, you would have recovered long ago.

6. If he had fulfilled all the prescriptions of his physician, he wouldn't have been operated on by a surgeon two weeks ago.

7. If you had agreed to have your tooth filled, you wouldn't have had terrible toothache.

8. But for your backache you would have helped your brother to repair his car this morning.

9. If my pain in the knee hadn't been so strong yesterday, I would have been able to play football.

10. You wouldn't have stayed in bed for so long if you hadn't stayed up late yesterday.