Ответ:

1. I won't phone again unless it is something urgent.

2. I would give them a hand, on condition that they promised to help in return.

3. As long as he has enough money..., he won't care about anything else.

4. He would ...., provided that he didn't have any health problems.

5. On condition that we have enough...., our crops will...

6. I wouldn't ...., as long as it were necessary.

7. We wont worry, as long as our customers are satisfied.

8. She would get... on condition that she met a .... .

9. Providing that you change, you wiil have...

Объяснение:

1. unless = if not

2. on condition that - при условии

3. won't = will not