I'm not completely sure but I think No, you would not say most like since it is talking about someone else's team.
NO... it should be IS Nathan the person whom you would most like to have on your team?
That sentence is grammatically correct.
I like the kind of person you are.
The sentence "It leads you to the path to become a successful person" is grammatically correct.
The sentence "When is it your birthday?" is grammatically correct. The subject "it" refers to the specific day that the person's birthday falls on, and the question is asking for that information.
Yes, the sentence "I missed you too" is grammatically correct. It is a response that mirrors the sentiment expressed by the other person.
It depends on who the narrator is. If some other person talking about Nathan and you then it is. Or if 'you' is the narrator the the sentence should be: Mrs...........Nathan and I...........her
Yes, the sentence "I too look forward to meeting with you" is grammatically correct. It means you are expressing anticipation for meeting the other person.
"I" is the first person pronoun.
"What is your expertise?" is correct. "Expertise" means the complete collection of a person's special skills and as such agrees with singular verbs. A sentence with the same meaning but a plural verb would be "What are your expert skills?"
No, "you is" is not grammatically correct. The correct form is "you are" when referring to more than one person or "you are" when referring to one person.
No, the sentence "Thank you John" is not grammatically correct. It should be written as "Thank you, John." Adding the comma after "thank you" separates the person's name as an interjection in the sentence.