14. If she wasn't very shy, she would enjoy the party

15. If this exercise wasn't to difficult, the student could do

22. If you don't keep silent, you won't understand the lesson

23. If you don't take a raincoat, you will be wet

24. If you don't go right now, you will be late for class

25. Unless that blue jacket too expensive, I won't choose it

26. Unless it rain, we will go for a walk

27. Unless I go on holiday, I will buy a bike 

28. Unless I have enough time, I won't visit them

29. Unless he studies hard, he will fail the examination

30. Unless Mike invites me, I won't come to his party

1. If she weren't shy, she would enjoy the party.

2. If this exercise wasn't too difficult, the students could do it

3. If you don't keep silent, you won't understand the lesson.

4. If you don't take raincoat, you will be wet.

5. If you don't go right now, you'll be late for class

6. Unless the blue jacket is expensive, l wiill choose it

7. Unless it rains, we will go for a walk

8. Unless l go on holiday, I will buy a bike

9. Unless l don't have enough time, l will visit them

10. Unless he studies hard, he will fail the examination

11. Unless he invites me, I won't come to Mike's party