How's life?
How's life treating you?
How's life with you?
How are things?
In good shapes, are you?
What are you up to these days?
What's happening?
What's new?
What's new with you?
What's the good news?
What's the good word?
What's the latest?
What's the news?
I hope all goes well with you?
I trust you're keeping well?

3) Stating how you are
All right thank you.
Much better, thank you.
Pretty good, thank you.
Quite well, thank you.
Very well, thank you.
Well, not too good yet. Better than I was though.
 
 
Bearing up, bearing up.(马马虎虎）
Could be better, but not bad.
Fair to middling(还算好）, thanks.
Getting along splendidly.
I'm full of the joys of spring.
I'm just great.
I'm on top of the world(幸福极了）, thanks.
Mustn't grumble.(过得去）
No complaints.
No, nothing much.
Not too bad, thanks.
Oh, the usual rounds(老样子）.
Pretty fair, thanks.
Really fine.
Same as ever.
So-so, thanks
introducing somebody

By the way, do you know each other,
Do you know Mr. Bob?
Have you met Nathan Malcolm?
Mr. Lynda, I want you to meet Mr. Naomi Service, the director of Camber Research Institute.
Oh, Hob, I'd like you to meet Sheila Rhoda, famous film star in Hollywood.
This is Nicholas Nimitz, manager of D.C.Company.
Meet my brother Walker.
Look, here's John! John--Tom, Tom--Hohn.
Oh, here's David. David, meet John.
Oh look, Wendy"s here. Wendy, come and meet Whitman.
Allow me to introduce Mrs. Jenny Sampson, Chairman of World Wild Life.
I'd like to introduce our director Mr. Sidney Carson. It is with great pleasure that I introduce to you Mr. Stanley.
Let me introduce President of the Sino -American Friendship Association, Mr. John Grant.
May I introduce Mr. Edgar Thompson, Chairman of the Carnegie Foundation?
May I present Mr. Stanley Young, Assistant Manager of General Electric?