1. Unless you give me a hand, I can't finish this task.

2. Unless you stop waste it, you will run out of money.

3. Don't call me, if it isn't an emergency

4. If James doesn't study harder, he will not pass the test

5. Unless Jane finishes her work before 6 pm, she will not dine out with her friends

6. Unless my brother finds a companion, he won't go travelling this summer

7. If you don't listen attentively to the teacher, it is not easy to do these exercises

8. Unless Jim submit his essay before Tuesday, he will be punished by the teacher

=>
1. I can't finish this task unless you give me a hand.
2. You will run out of money unless you stop wasting it.
3. Don't call me if it isn't an emergency.
4. James will not pass the test if he doesn't study harder.
5. Unless Jane finishes her work before 6 pm, she won't dine out with her friends.
6. My brother won't go travelling this summer unless he finds a companion.
7. It is not easy to do these exercises if you don't listen attentively to the teacher.
8. Unless Jim submits his essay before Tuesday, he will be punished by the teacher.