Поставить глагол в скобках в conditional 3 и 2 1.if he didn't ring me up, i(not to come) 2.if he(not to write) to me, i wouldn't have ansvered him. 3.if(to be) you, i would have apologised to her.

1.If he didn't ring me up, I wouldn't come.
2.If he hadn't written to me, I wouldn't have ansvered him.
3.If I had been you, I would have apologised to her.