1.If he wasn't busy, he'd come
2.If she'd studied well last year, she wouldn't have received bad marks.
3.If he hadn't broken his bicycle, he would've gone to the country.
4.If he had practise, she would speak English better.
5.If I hadn't had a bad headache yesterday, I would've come to see you
6.If the ship had not sailed near the coast, it wouldn't stuck a rock