Can you please tell me if the following senences are possible?

1)I'm always stricter than him (or than he is) when evaluating the students' tests.
2) In spite of being ill (Can you say "despite being ill"), he decided to go for a walk.
3)He was ill. Yet (still, however, neverthless, nonetheless are they all possible?) he decided to go for a walk.
4) In spite of a broken leg he won the race.
5) Is there any good news?
6) Your presentation mustn't last longer (or more?) than five minutes.
7) As you got into a flap (meaning: get anxious?) during your oral test I'll test you again next week.
8) Each narration focuses on the impression which an external event leaves (also makes?) on the characters and on how it affects them (or how the latter are affected bu them?)
9) Her childhood is affected by the presence of a violent and strict father, who prevents her to fulfil her dreams.

1. than he (is)

2. yes
3. yes
4., 5., 6. OK
7. "flap" sounds more like "slang"
8. typo = bu = by
9. prevents her from fulfilling...

Sra