Chọn đáp án đúng: She’ll fail the exam if she ___ study

6. She’ll fail the exam if she ___ study.

      A. if                            B. doesn’t

7. We’ll be late ____ we leave soon.

      A. if                            B. unless

8. ___ I am not feeling better tomorrow I will go to the doctor’s.

      A. Unless                   B. If

9. ____ you do not make the payment in time, your car will be confiscated.

      A. If                           B. Unless

10. You will lose your job ___ you change your attitude and become friendlier.

      A. unless          B. If

11. She won’t know the truth ___ you tell it to her.

      A. unless          B. if

12. ____ you arrive early, you’ll be able to meet the customers before the meeting.

      A. Unless                   B. If

13. ____ she eats healthy food, she won’t lose some weight.

      A. Unless                   B. If

14. They won’t arrive on time ___ they finish the work early.

      A. unless          B. if

15. Will she able to eat some cake ___ I put eggs in it?

      A. unless          B. if