1. You didn't have to buy milk - there is still some in the fridge.
2. After two months of intensive physiotherapy my grandfather was able to move from his bed to the bathroom.
3. The conference was scheduled for 9 am so I had to be at work at least ten minutes before.
4. I was able to read and write long before I went to school.
5. By the time I was fourteen years old I was able to speak three foreign languages fluently.
6. She started to feel dizzy and had to lie down.
7. John did his best but he simply didn't have to help them solve their problems.
8. Although the last contestants started ten minutes after the first ones, they were able to catch up with the group.
9. The worst thing about Kate's previous job was that she had to wear a uniform.