1. She didn't recover her confidence until that morning
-> It was not until..that morning that she recovered her confidence.......
2. He doesn't arrive at the office until half past nine
-> It is not until...half past nine that he arrives at the office...
3. Mary didn't work for the UN until 2004
-> It was not until...2004 did Mary work for the UN...
4. I don't know how to ride a bicycle until I was 15
-> It is not until...I was 15 did I know how to ride a bicycle..
5. John didn't finish reading my book until last Saturday
-> It was not until...last Saturday did John finish reading my book..
6. I don't like chocolate until I went to university
-> It is not until...I went to university did I like chocolate ..
7. No one could leave the stadium until 2.30
-> It was nothing until....2.30 could everyone leave the stadium.
8. She wasn't allowed to open her presents until her birthday
-> It was not until...her birthday was she allowed to open her presents..
9. We didn't have any holidays until last summer
-> It was not until. last summer did we have any holidays..
10. She doesn't stop learning German until the age of 24
-> It is not until..the age of 24 did she stop learning German...