1) If I KNEW how to repare the oven, I would do it.
2) If you HAD a valid passport...
3)I WOULD SELL that car...
4) ... if she DOESN'T GET UP early enough.
5) ... if I COULD afford it.
6) ... if I DON'T SEE well.
7) ... you WOULD BE ABLE TO buy a new car.
8) ... if he WANTS to pass the exam.
9) If the weather improves...