Are all these sentences grammatically correct?

None of them are correct. They are lacking punctuation marks at the end.
If you make that correction, then all are correct. The last is quite casual.

Okay, I will put full stop at the end of each sentence.
I want to know which verb we should use with coffee , drink or have
What do you say have a coffee or drink a coffee in your daily talks in your country?
You are an American,right?

Okay. I will put full stop at the end of each sentence.
I want to know which verb we should use with coffee drink or have.
what do you say in your daily talks in your country I am drinking coffee or I am having coffee?

ahm14sin your daily talks

Write: "in everyday conversation"

ahm14sI am drinking coffee or I am having coffee?

I say "having". That suggests everything that goes with it, like sitting somewhere comfortable and paging through the newspaper while slowly drinking the coffee.

"drinking" seems to focus more narrowly on j

Thanks Calif Jim
Is daily talks wrong or something?
So, drinking or having are both correct grammatically.
One more thing should I put a before coffee or not necessary?

ahm14sIs daily talks wrong or something?

It is not grammatically wrong. It is wrong in terms of usage. "Daily talks" sounds like a radio program. That's not the sort of thing you mean.

ahm14sSo, drinking or having are both correct grammatically.

Yes.

ahm14sshould I put a before coffee or not necess