1. John stopped smoking 10 years ago.
=> John used to smoke 10 years ago.
2. They lived in Seoul some years ago.
=>They used to live in Seoul some years ago.
3. Cold weather makes Mary stay at home.
=> Mary is used to being made to stay at home by cold weather
4. They destroyed the flower garden in the park.
=> The flower garden was destroyed in the park
5. I feel nervous. I have not traveled by air before.
=> I'm not used to travel by air
6. It’s very cold in Hue in winter. Don’t worry ! I have been living in Hue for 12 years.
=>I get used to the cold winter in Hue (because I have been living there for 12 years)
7. I am very nervous when riding on the left.
=>I'm not used to driving on the left
8. This is the first time I have eaten this food.
=>I don't get used to this food
9. They often walked to Vung Tau on the weekend.
=>They used to walk to Vung Tau on the weekend.
10. Ben drank a lot of coffee but now he prefers tea.
=>Ben used to drink a lot of coffee but now he's used to drinking tea