1, He used to work hard when he was young.
2, Mark isn't old enough to ride his bike to school.
3, Nga is interested in listening to traditional stories.
4, The children used to play badminton.
5, Sao Mai movie theater is not far from Hoa's house.
6, It is dangerous to go out late at night.
7, Nga isn't fond of travelling by plane.
8, Mr Hung used to walk to work.