I,
1. They used to live in HN some years ago
2. John used to smoke
3. Miss Chi used to teach us English when we were students
4. Ronaldo used to be a football player 10 years ago
5. My father used to take me to the city when I was a child
6. He used to be a secretary for my company.
7. Linda used to be late in class
8. Her brother used to smoke cigarettes
9. he used to feed the pigs when he was young
10. There used to be old buildings in this city
II.
41. a -> would
42. a -> used
43. b -> of
44. a -> I
45. b -> started
46. a -> where
47. a -> tall enough
48. c -> on
49. b -> but
50. a -> children
