Complete the following conditional sentences.  In some cases more than one answer may be possible.  In such cases ensure you understand the difference.  Some forms may be passive.  The answer key is provided below.

  1. I _______ (buy) a house as soon as possible (be) you.
  2. If I _______ (arrive) early I _______ (wait) inside.
  3. We _______ (not be) in such a mess, if I _______ (plan) the renovation project more thoroughly!
  4. If the building _______  (have) a lift it _______  (be) easier for us, especially when we have heavy shopping.
  5. If I _______  (have) the right skills, I _______  (help) you develop your website.
  6. If Tom _______  (meet) Jane 10 years earlier they _______  (marry) by now!
  7. When _______  (pull off) in your car always _______  (ensure) you check your mirrors first.
  8. If my favourite band _______  (tour) this year I _______  (go) and see them.
  9. If my boss _______  (retire) I _______  (hope) to replace him.
  10. If forests _______  poorly _______  (manage) they become uncontrollable.
  11. If my designs _______  (accept) it _______  (mean) a big contract.
  12. If you _______  (not hurry up) we _______  (miss) our flight.
  13. If I _______  (revise) I _______   (prepare) for today’s exam.
  14. If I _______   go to Henry’s party I _______   (stay) at home.
  15. An open fire _______   (present) a danger if left ( not attend) .
  16. If I _______   (remember) to enter the lottery, I _______   (win) a lot of money because my usual numbers came up.
  17. If we _______   (return) to the moon soon, Mars _______   (be) achievable in the next decade.
  18. If you _______   (complain) you _______   (get) compensation after your accident.
  19. If I _______   (do) my figures regularly my accounts _______  to complete.
  20. If we _______   (have) the time we _______   (do) more volunteering.

Answer Key (Press to reveal)
  1. I would buy a house as soon as possible if I were you.  (II Conditional - Hypothetical)
  2. If I arrive early I will wait inside.  (I Conditional - Possible)
  3. We wouldn’t be in such a mess, if I had planned the renovation project more thoroughly! (Mixed III+II)
  4. If the building had a lift it would be easier for us, especially when we have got heavy shopping.  (II Conditional - Hypothetical)
  5. If I had the right skills, I would have helped you develop your website. (Mixed II+III)
  6. If Tom had met Jane 10 years earlier they would have been married by now! (III Conditional - Unreal)
  7. When pulling off in your car always ensure you check your mirrors first. (0 Conditional - General Rule)
  8. If my favourite band is touring / tours this year I will go / am going to see them. (I Conditional - Possible)
  9. If my boss retired / were to retire I would hope to replace him. (II Conditional - Hypothetical)
  10. If forests are poorly managed they become uncontrollable. (0 Conditional - General Rule)
  11. If my designs are accepted it will mean a big contract. (I Conditional - Possible)
  12. If you don’t hurry up we will miss our flight. (I Conditional - Possible)
  13. If I had revised I would be better prepared for today’s exam. (Mixed III+II)
  14. If I hadn’t gone to Henry’s party I would have stayed at home. (II Conditional - Hypothetical)
  15. An open fire presents a danger if left unattended. (0 Conditional - General Rule)
  16. If I had remembered to enter the lottery, I would have won a lot of money because my usual numbers came up. (III Conditional - Unreal)
  17. If we return to the moon soon, Mars is / will be achievable in the next decade. (0 Conditional - General Rule or I Conditional possible)
  18. If you had complained you would have got compensation after your accident. (III Conditional - Unreal)
  19. If I do / did my figures regularly my accounts  will be / would be quick to complete. (I Conditional possible / II Conditional - Hypothetical)
  20. If we had / had the time we would have done more volunteering. (III Conditional - Unreal / Mixed II+III)