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1. I used to stay up late to watch football matches last year.
2. There used to be some trees in the field, but now there aren't any.
3. Anna used to live with her parents.
4. He used to be a poor man, but he becomes a rich businessman.
5. They didn't use to go to the cinema every Sunday last year.
6. In the past my hair used to be shorter (than that now).
7. I used to have time to collect stamps when I was in primary school.
8. Did you use to go to the beach when you lived in Nha Trang?
9. Mr. Hung used to go to work by motorbike, but now he goes to work by bus.
10. There used to be traffic jams in this street during rush hours, but now the street becomes wider.
Used to V : đã từng/phủ định : didn't use to V/nghi vấn : Did S use to V?