Can you pleas check if the following sentences are correct? Thank you very much for your help.

1) He has been (or is?) guilt-ridden since the death of his friend.
2) He is unable to take (make?) decisions by himself.
3)News of his suicide brought by the Bradshaws intrudes upon Clarissa's party.
4)She suffers from headaches as a consequence of her mental illness.
5) He is a war-hero, who is (or has?) now settled into civilian life.

Hey Franco, What's up?

1) It would make more sense with has. He is been, does not make sense. You could write it as He is guilt-ridden.... It makes more sense with has, so just take the is out, and that sentence will be perfect

2) There are numerous ways to say this sentence.
-He is unable to make his own decisions.
-He has difficulties making decisions on his own.
-He is unable to take....(that word is not generally added) I prefer make.

3) This sentence needs to be edited.
This is how I would rewrite it:
As the Bradshaws brought in the news of his suicide, Clarissa’s party got intruded.(I don’t know if this is the right way to put it)
Another way is: News of his suicide, brought by the Bradshaws, intruded upon Clarissa’s party.
There is probably another way to make this sound better. I can’t seem to find it right now, but maybe you can.

4) It sounds fine, yet another way to say this would be: As a consequence of her mental illness, she suffers from headaches.

5) You could say this sentence variously
He is a war-hero who is settling into civilian life.
He is a war-hero who has settled into civilian life.
The now was added as an extra piece of info in this sentence, so I took it out. The sentence seemed to be weird with it added in.

Can I please know what grade level this is? By knowing your grade level, I will be able to use terms that work out better for you.