Odpowiedź :
zad 1
A) If her friend hadn't been sick with malaria, Kylie wouldn't have learnt anything about this disease.
B) I don't think that I would have enjoyed the concert more if more people had attended it or if it had taken place at a different location.
C) If Oscar had known that it was your birthday on Saturday, he would have brought you a present.
Zad 2
1 If you had texted me on Friday night, I wouldn't have gone to the disco with my sister.
2 I wouldn't have got lost in the city centre if I had followed your instructions.
3 If Brian hadn't lost his smartphone, he wouldn't have had to buy a new one.
4 They would have recognized the TV presenter if they had seen her programme before.
Wyjaśnienie:
III okres warunkowy = If + Past Perfect, + Future Perfect in the Past (would + have + 3 forma czasownika)