I think they are played romantically as heroines.
1b
2c
3D
4a
5d
6a
7b
8a
9b
10d
Im a natural English speaker. It’s my first language. Hope I helped! Ps I can answer in comments.
If you are telling us to revise the sentence, one error is that there is a double negative. 'not' and 'un' would cancel each other, and the revised sentence 'I wouldn't say he's the nicest guy around, but I've seen him behave kindly before.'