Complete the following phrases. use the following preparations: with, of, at, on, about. make up 5 sentences with these phrases.
1 to be
2 to be
3 to be
4 to be
5 to be ​

1. to be good at

Sam was not good at games.

2. to be crazy about

He is not crazy about the new film.

3. to be proud of

He was very proud of the assignment.

4. to be keen on

And you are passionately keen on anatomy?

5. to be popular with

He's always been popular with the girls.