Đề bài : Viết lại các câu sau bằng cấu trúc used to

Giúp tui với túi đang cần gấp

5 . Dennis used to smoke three years ago .

6 . My parents used to live in the USA when they were young .

7 . Jim used to be my beat friend , but we aren't friends anymore .

8 . My uncle used to be a national swimming champion .

9 . I didn't use to eat ice cream when i was a child .

10 . Barbara used to stay with an Italian family when she was Italy .

- Cấu trúc used to : 

+) S + used to + Vo + O ...

-)  S + didn't use to + Vo + O ...

?) Did S use to + Vo + O ... ? 

                     #goodluck