1 if he had taken her advice the night before, he wouldn't have made that mistake
2 David to buy that coat
3 told Hilary he would come to see her if he had time the day after
4 they had left the house early, they wouldn't have been late for the play
5 it doesn't stop raining, we won't go out
6 you had kept your feet dry, you wouldn't have caught cold
7 If you don't review the lesson carefully, you can't do the test well
Unless you review the lesson carefully, you can't do the test well
8 If you don't leave immediately, I will call a police man
9 If you aren't careful, you will cut yourself with that knives