Certainly. It was and with me. Let's discuss this question. Here or in PM.
I think, that you are mistaken. I can defend the position. Write to me in PM, we will talk.
You are not right. I am assured. I can defend the position. Write to me in PM, we will communicate.
As the expert, I can assist. Together we can come to a right answer.
I apologise, but this variant does not approach me.