I.1 dave used to work in the factory

2 I met Isebel a long time ago

3 Ann told me to wait for her

4 becase I haven't been invited I'm not going to the party

5 the reason why I missed the beginning of the film is my car broke down

6 mary wishes she was on the beach now

7 he used to drink much milk

8 a lot of articles for the Vietnam news have been written by Ms Huong

9 nam and his family had a two-day trip to their home village

10 I have played the piano for ten years

II.1 to

2 on

3 at

4 by

5 with

6 to/about

7 about/of

8 without

9 on/in

10 at/on

11 for

12 from

13 up

14 out

15 on

16  on/in