Every Day Expressions (1st Week)

1.  Simple Greetings
Hi!
Hello!
Hello there!
Howdy!
Hey!
Yo! (slang)

2. General Greetings
How are you?
How's it going?
How's it been?
How is everything?
How have you been?
What have you been up to?
What's new? (iformal)
What's happening? (slang)
What's going on? (slang)

3. Greeting a person you haven't seen in a long time
I haven't seen you in years!
Long time to no see! (informal)
I haven't seen you in an age!

4. Expressing surprise at meeting someone
What a surprise to meet you here!
Imagine meeting you here!
Never thought I'd see you here!
What are you doing in this part of town?
What are you doing out of the office?
Where've you been hiding youself?
What have you been up to?
Shouldn't you been at work?
Have you been keeping busy?

5.  After you have greeted someone.
We seem to keep running into each other.
Haven't we met before?
Didn't we meet at the party last week?
I'm sorry; I've forgotten your name.
I've been meaning to call you.