1-He asked his parents for loan but he didn't say what he wanted the money for, so they refused. I think that if he told them, they might have agreed.
2-I overslept, that's why I am half an hour late. If my phone hadn't have rung at nine o'clock I might still be in bed.
3-It was the drug, not the disease that killed him. He would still be alive today if he hadnn't taken that drug.
Student or Learner