III.1 if I buy a new hat I will give it to you

2 if today were sunday the pupils could go swimming

3 if my brother has enough money he will buy a bicycle

57 if peter studied hard he could get good marks

8  if my sister didn't have a terrible headache she wouldn't absent from class

11 if he didn't have to study for his exam he could go out 

12 if she weren't lazy she could pass the exam

13 if he pays me tonight I will have enough money to buy a car

14 if he didn't smoke too much he could get rid of his cough

15 if she isn't very shy she can enjoy the party

16 if I get a work permit I will stay for another month

17 if he takes any exercises he will be healthy

18 if I had a right change we could get the ticket

19 if you study hard you will pass the exam

20 if you are impatient you won't make mistakes

22 if I were you I wouldn't buy it

23 unless they invite me I won't come

25 if you walk to the park it will take you 5 minutes

26  if it rains we will stay at home

27 if I were you I would cut down on smoking right now

28 if they were rich they could help us

29 if she isn't very shy she can enjoy the parties

30 if he takes any exercises he will be so healthy

32 I will take you if only my father lends me a car 

32 if he did his homework he wouldn't be punished

33 if he had enough time he could help me

34 if she took any exercise she wouldn't be overweight

35 if he had a bicycle he wouldn't go to school late

36 if I weren't bad at english I could homework

37 if he practice speaking french he would speak it fluently

122 unless she hurries she will miss the bus

123 if she walked without help she could go out very often

127 if it doesn't stop raining we won't go out

128 unless you keep silent I will scream

130 if he doesn't phone immediately he won't get any information

V.1 unless I feel better I won't go to school

2 tony won't talk to you unless you question him

3 unless you put on your overcoat you will be cold

4 unless you work hard you will fail the exam

5 unless you keep your feet dry you will get a cold

6 unless I leave now I will miss the flight

7 unless you are going to the party I won't go

8 unless you give me your address I can't send you a postcard

9 unless I won a big prize in a lottery I wouldn't build a school for the poor

10 unless you leave me alone I will call the police