Ответ:

2. Unless you leave me alone, i'll call the police.

3. If it's snowy we don't go to school

4. If Jack didn't help me, i wouldn't have been able to move the table.

5. If you make me some coffee, i'll give you one of my biscuits

6. Unless you had told me about Sue's hair, i wouldn't have noticed.

7. Should you see Peter tell him to be here at 8:00

8. If you were asking me to marry you i wouldn't accept