how we should respond to others

during the group discussion of an English speaking exam

So Janice what do you think about the government's tobacco tax increase?

I feel it's a step in the right direction towards the elimination of

tobacco usage in its entirety. Do you agree?

Yes, I totally agree. Can you elaborate?

Obviously, he didn't understand what She was saying

And answer with a standard phrase. This is what he should have said

I'm sorry. I don't really understand what you mean

do you mind rephrasing that?

Okay, no problem. What I mean is..

It's okay to ask questions for clarification

now even if he did understand what she was saying,

he could say that's true, or

you make a good point

see you next time