№5
1. didn't ache
2. stopped complaining
3. had
4. skiing wasn't
5. my sister didn't listen to that song
№6
1. hadn't lost
2. had taken
3. wouldn't have had
4. hadn't practised
5. wouldn't have known
№7
1. have been late if we hadn't missed
2. had been careful she wouldn't have had an accident
3. wouldn't have lost the game if they had played well
4. had taken his medicine he would have gotten
