Choose the correct answer (if or unless).

1. ____________ you help me, I’ll be unable to do it .
2. ____________ I meet him, I’ll tell him the whole truth.
3. You won’t get well ____________ you stop smoking.
4. ____________ you exercise regularly, you won’t be able to lose some weight.
5. ____________ you exercise regularly, you’ll lose some weight.
6. The teacher will be furious ____________ you don’t do the homework.
7. You can’t go on vacation ____________ you don’t save some money.
8. You will feel cold ____________ you wear a warm jacket.
9. We’ll arrive on time ____________ we hurry.
10. Don’t call me ____________ it’s an emergency.