1. If you don't save your work, you might lose everything.
    otherwise

  2. If he hadn't taken the medicine, he would have felt worse.
    but for

  3. If you don't set an alarm, you won't wake up on time.
    otherwise

  4. If she hadn't helped him, he wouldn't have completed the project.
    but for

  5. If you don't lock the door, someone might break in.
    otherwise

  6. If they hadn't followed the instructions, they would have failed.
    but for

  7. If you don't answer the phone, they will leave a message.
    or

  8. If he hadn't had the map, he would have gotten lost.
    without

  9. If you don't apologize, she will be upset.
    otherwise

  10. If they hadn't supported the plan, it wouldn't have succeeded.
    but for

  11. If you don't check the weather, you might get caught in the rain.
    otherwise

  12. If she hadn't taken the opportunity, she wouldn't have advanced in her career.
    but for

  13. If you don't water the garden, the plants will wilt.
    otherwise

  14. If he hadn't had the courage, he wouldn't have spoken up.
    without

  15. If you don't study, you will fail the exam.
    otherwise

  16. If they hadn't intervened, the situation could have gotten worse.
    but for

  17. If you don't finish your assignment, you won't pass the course.
    or

  18. If she hadn't attended the meeting, she wouldn't have known the details.
    without

  19. If you don't wear sunscreen, you might get sunburned.
    otherwise

  20. If he hadn't received the scholarship, he wouldn't have been able to attend college.
    but for

Answers

  1. If you don't save your work, you might lose everything.
    You need to save your work; otherwise, you might lose everything.

  2. If he hadn't taken the medicine, he would have felt worse.
    He would have felt worse, but for the medicine.

  3. If you don't set an alarm, you won't wake up on time.
    You need to set an alarm; otherwise, you won't wake up on time.

  4. If she hadn't helped him, he wouldn't have completed the project.
    He wouldn't have completed the project, but for her help.

  5. If you don't lock the door, someone might break in.
    You need to lock the door; otherwise, someone might break in.

  6. If they hadn't followed the instructions, they would have failed.
    They would have failed, but for following the instructions.

  7. If you don't answer the phone, they will leave a message.
    Answer the phone, or they will leave a message.

  8. If he hadn't had the map, he would have gotten lost.
    He would have gotten lost without the map.

  9. If you don't apologize, she will be upset.
    You should apologize; otherwise, she will be upset.

  10. If they hadn't supported the plan, it wouldn't have succeeded.
    The plan wouldn't have succeeded, but for their support.

  11. If you don't check the weather, you might get caught in the rain.
    You need to check the weather; otherwise, you might get caught in the rain.

  12. If she hadn't taken the opportunity, she wouldn't have advanced in her career.
    She wouldn't have advanced in her career, but for the opportunity.

  13. If you don't water the garden, the plants will wilt.
    You need to water the garden; otherwise, the plants will wilt.

  14. If he hadn't had the courage, he wouldn't have spoken up.
    He wouldn't have spoken up without the courage.

  15. If you don't study, you will fail the exam.
    You need to study; otherwise, you will fail the exam.

  16. If they hadn't intervened, the situation could have gotten worse.
    The situation could have gotten worse, but for their intervention.

  17. If you don't finish your assignment, you won't pass the course.
    Finish your assignment, or you won't pass the course.

  18. If she hadn't attended the meeting, she wouldn't have known the details.
    She wouldn't have known the details without attending the meeting.

  19. If you don't wear sunscreen, you might get sunburned.
    Wear sunscreen; otherwise, you might get sunburned.

  20. If he hadn't received the scholarship, he wouldn't have been able to attend college.
    He wouldn't have been able to attend college, but for the scholarship.