Inversion 3

Change the normal sentence into one with inversion. You may have to change some of the words. ANSWERS + EXPLANATION
1) Sarah didn't realise that she had lost her keys until she got home.
Not until that she had lost her keys.
2) You can only watch the film after the match has finished.
Only after watch the film.
3) They were only able to cross the land border by offering her a bribe.
Only by able to cross the land border.
4) He will feel better if he takes this medicine.
Only if feel better.
5) I haven't had such an enjoyable day since I was young.
Not since such an enjoyable day.