1. If you.clean the window, I will hang the curtain.
2. Unless she is )ill, we will go to the swimming pool.
3. They will not let you in if you come late.
4. Providing he proposes to you, what will you do?
5 Tell) him to phone me if you see him.
6. The doctor will not help you if you do not tell)the truth.
7. If my best friend betrays me, I will never speak to her again.
8. Probably they will have more time for me if they change jobs.
9. I. will give you the money unless you mention them about that accident.
10.As soon as Kate passes the exam, we will go abroad.
11 If you do not go away I'll send for the police.
12 I'll be very angry if he makes any more mistakes.
13 If he is late we'll go without him.
14 She will be absolutely furious if she hears about this.
15 If you put on the kettle I will make the tea.
16 If you give my dog a bone he will bury it at once.
17 If we leave the car here it will not be in anybody's way.
18 He'll be late for the train if he does not start at once.
19 If you come late they will not let you in.
20 If he goes on telling lies nobody will believe a word he says.