E.g.:
A: Hi, nice to meet you! I am ×××.
B: Nice to meet you, too. My name is ×××.
I'm glad to see / know you!
It's a pleasure to meet you.
E.g.:
A: How are you?
B: I'm Fine, thanks. And you?
How are you doing ?
How have you been ?
How's everything ?
How's everything with you ?
How's everything going ?
How's it going ?
How was your day?
Pretty good./It's going pretty well.
Same as usual/always.
Just so so ./So so.(一般般,希望能更好)
Not bad ./Not too bad.
Terrible.
E.g.:
A: What's up, man?
B: Nothing much./Not much.
What's new?/What's going on?