1. *Had* I known about the changes, I would have prepared differently. (Had)
2. *Should* you need any assistance, don’t hesitate to ask. (Should)
3. *Were* he to call, tell him I’m busy. (Were)
4. *Had* she studied harder, she would have passed the exam. (Had)
5. I wouldn’t be so tired *were* I to take regular breaks. (Were)
6. *Had* we arrived earlier, we would’ve caught the flight. (Had)
7. *Should* it rain tomorrow, we will stay at home. (Should)
8. *Had* I not seen it with my own eyes, I wouldn’t have believed it. (Had)
9. You’d know what to do *were* you in my shoes. (Were)
10. She wouldn’t have lost *had* she stuck to her principles. (Had)
11. *Were* he an honest man, he wouldn’t have lied. (Were)
12. I’d buy a car *were* I a millionaire. (Were)
13. *Had* the keeper remained vigilant, the wild bear wouldn’t have escaped. (Had)
14. I would’ve been at the concert *had* I known about it earlier. (Had)
15. *Should* he propose, she would say yes. (Should)

1. *Had* you been more supportive, things would have been different. (Had)
2. *Should* I fail, don’t be disappointed. (Should)
3. She could’ve helped him, *had* he asked. (Had)
4. *Were* you to lose everything, I would still stand by you. (Were)
5. *Should* they win the match, it’d be a major upset. (Should)
6. I could have known the truth *had* he told me earlier. (Had)
7. *Were* she more understanding, he wouldn’t have felt so distant. (Were)
8. *Had* they worked together, the task would have been easier. (Had)
9. *Were* I you, I’d definitely reconsider my decision.(Were)
10. She would have jumped off the roof, *had* I not stopped her. (Had)
11. *Should* you find my phone, please inform me immediately. (Should)
12. He would be lost *were* he to visit the city alone. (Were)
13. The machine would’ve been damaged *had* they neglected its maintenance. (Had)
14. *Should* he return, I’ll not forgive him. (Should)
15. *Were* there a chance, he would apologize. (Were)