Don't stare. If they seem confident and well-tempered, you could politely ask how they ended up that way.
The correct phrasing is "Have you finished the meeting?" or "Have you completed the meeting?"
The correct phrase is "in a meeting." This expression indicates that someone is currently participating in a meeting or is involved in its discussions. Saying "on a meeting" is generally considered incorrect in this context.
No, it's having a meeting or attending a meeting (or you might be holding a meeting if you're the boss).
The correct way to run a public meeting is to first decide a destination. You must also have a facilitator for the meeting.
You just *had* a meeting
The correct formation of this sentence will be: "This meeting is of utmost importance."
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.
Yes, it is correct to say "I will be present during the meeting next week." This conveys your intention to attend the meeting and be physically there.
Stephen Hawking
The answer is "Thank you for meeting with my colleagues and me." A tip for remembering this usage is to eliminate the word "colleagues." Then the statement becomes, "Thanks for meeting with I," which of course sounds wrong. That tells you that the correct pronoun is "me."
Yes, "sequel to our last meeting" is correct if you want to refer to a follow-up or continuation of the previous meeting. Another common expression to convey this idea is "following up on our last meeting."
I think you're trying to say "I look forward to meeting you."