The answer is all of the above except choice 3.
In a business setting, you never want to use a detached tone. This gives the impression to your colleague/boss/etc. that you don't care and don't really want to be there. It shows that you don't see them as important and don't care about what they have to say. It won't achieve anything for you.
Answer:
Gatsby asked Nick if he could invite Daisy to his house one afternoon and invite himself (Gatsby) as well.
Answer:
The Birds flew south to their winter home.
Explanation:
When you study basic English Grammar one of the first topics is the personal pronouns:
I ( Singular)
You ( Singular or plural)
He ( Singular)
She ( Singular)
It ( Singular)
We (Plural)
They (Plural)
The Pronoun The birds must be substituted by They flew south.....
