16. Provided your handwriting is legible the examiner will accept your answers => So long as the examiner accepts your answers, your handwriting is legible

17. If she hadn't insisted on kissing everyone goodbye she would have caught the train => If it hadn't been for her insistence on kissing everyone goodbye, she would have caught the train

18. It was the goalkeeper who saved the match for us => If it hadn't been for the goalkeeper, we couldn't have saved the match

19. It is difficult to know what one's reaction would have been in such a situation => If I knew what one's reaction would have been in such a situation, it wouldn't be difficult.

20. if you hadn't been speeding, the police wouldn't have stopped you => You must have been speeding so the police had stopped you.

21. if you persist in defying instructions we'll be forced to act => Should you persist in defying instructions, we'll be forced to act

22. Because the evidence was withheld, the prisoner was found guilty => Had the evidence been not withheld, the prisoner wouldn't have been found guilty.

23. If you changed your mind, you'd be welcome to join us => Were you changed your mind, you would have been welcome to join us.

24. he would have lent you his violin if you'd asked him => Had you asked him, he would have lent you his violin.

25. a successful interview means that you will be offered a job =>Provided an interview is successful, you will be offered a job.

26. you are allowed a free ticket if you bring a group with you => so long as you bring a group with you, you are allowed a free ticket

27. You'd better take a vote if you can't reach the consensus => Should you take a vote if you can't reach the consensus

28. research into gene technology has been so successful that we are not now with some serious ethical problems => If research into gene technology hadn't been so successful, we would have been now with some serious ethical problems.

29. if you had given it in on time, you would have got a high mark => Had you given it in on time, you would have got a high mark

30. If you wish to take advantage of the offer, kindly tick the box on your order form => Should you take advantage of the offer, kindly tick the box on your order form.