1.If you make a mistake, they will find you. If they find you they will catch you. - If they catch me, I shall confess. - If you confess they will put you into prison. If you are lucky, they won’t catch you.
2.If you go to Rome, you’ll see the Coliseum. If you visit London, probably you'll see the Queen. If you stay with me you won’t see anything, but I’ll be happy.
3.When he proposes to her, she’ll marry him. But she won’t be happy when she marries him.
4.I’ll visit you as soon as I feel better.
5.We’ll stay here as long as our money lasts.
6.They won’t send us a telegram unless there is something urgent.
7.You’ll phone me before you go away, won’t you?
8.I’ll come to London after they find some place for us to stay at.
9.We’ll work till it gets absolutely dark.
10.Students won’t get financial rewards unless they get high grades.
11.What will you do when summer comes?
12.If he doesn't come we’ll have a problem.