If he hadn’t climbed up the ladder, he wouldn’t have fallen off the ladder. If he hadn’t fallen off the ladder ,he wouldn’t have broken his leg. If he hadn’t broken his leg, he wouldn’t have gone to hospital. If he hadn’t gone to hospital, he wouldn’t have met Linda there. If he hadn’t met Linda there, they wouldn’t have fallen in love . If they hadn’t fallen in love, they wouldn’t have got married six months later.