How are you today回答

Fine,thank you.

I'm okay/good/fine/great/excellent.
Thank you.
And you?

I'm fine/OK/pretty well/ great/super太好了/terrific好得不得了/so-so一般.Thank you.

口语说法：can't be better

I'm fine . Thank you
And you ?

Fine/Very well,thanks. And you?