1) I would not buy that car if I were you.
2) I helped you if I could but I'm afraid I can't.
3) If he spoke more clearly, people could understand him.
4) If this book were not so expensive, I would (might, could)buy it.
5) I wouldn't mind living in England if the weather was better.
6) If we had the choice, we would live in the country.
7) f I were you, I'd tell you her everything.
8) You look awful. If you didn't go to bed sо late every night, you wouldn't be tired all the time.