Rewriting sentences.

Hi,

Could you please correct these sentences?

I'm trying to rewrite the following sentences, providing the appropriate modal without changing the original meaning of the sentences.

1. It was not necessary for you to come in person. A phone call would have been enough.
- You needn't have come in person. A phone call would have been enough.

2. It is not possible for her to write; she's never been to school.
- She can't write; she's never been to school.

3. If I have been in your position, I wouldn't have trusted him.
- You shouldn't have trusted him.

4. The phone has been ringing several times, yet there is no reply. It is certain that Peter is out.
- The phone has been ringing several times, yet there is no reply. Peter must be out.

5. No matter how we complain to the neighbours, they always insist on disturbing us at night.
- No matter how we complain to the neighbours, they will always disturb us at night.

Thank you so much.