1. Only Caroline knew/did know the departure time of our train.
2. Little we realised/did we realise how magnificent the scenery would be.
3. Seldom I see/do I see Martha and Christopher together these days.
4. They were/Had they been so rude to me, I would have talked to their parents.
5. Have we never/ We have never faced such big difficulties before.
6. At no time they appeared/did they appear concerned or worried.
7. My younger sister does enjoy/ enjoys party games.
Komentarz do (7): tutaj enjoys byłoby poprawne, bo akurat inwersja w tym przypadku to zabieg czysto stylistyczny, a nie zasada gramatyczna.
