1 if he had been careful, he would not have had that terrible accident.
2 I would have passed the exam if I had worked hard.
3 Her father would not have died if he had gone to the doctor.
5
1 If I wake up early, I'll go jogging.
2 He will visit his uncle, if he finishes early.
3 If she had taken care of her son, he would not have become a criminal.
4 If I were a star, I would help the poor.
5 She would have been top of her class if she had worked hard.