1 Jade will ask lots of difficult questions if she gets to interview a famous politician.
Should. Jade gets to interview a famous politician , she will ask lots of difficult questions
2 The world would be much better off if all environmental pollution stopped today.
Were The world much better off if all environmental pollution stopped today.
3 I wouldn't have become a teacher if I hadn't had such a good English teacher at school.
Had i not had such a good English teacher at school,  I wouldn't have become a teacher