The key to exercise solutions in chapter 6.5 - Grammar for the textbook Focus 3 - Student's Book with authors Daniel Brayshaw, Vaughan Jones, Bartosz Michałowski and Sue Kay from Pearson Education
Question
Answer the questions about the story.
Answer
If Yates had left Simpson with a broken leg, he would certainly have died.
If Yates hadn't cut the rope, he would have fallen to his death.
Yates would have already left if Simpson had arrived a few hours later.