Classify the words/expressions into two groups: 1)interacting; 2)keeping a conversation going. INTERACTING KEEPING A CONVERSATION GOING ... you know what I mean? Really? (I didn't know that.) Did you know that ...? It is, isn't it? It's true, and what's more ... So, what can we ...? Exactly. Goodness me! That's terrible! No, I suppose it isn't. It's shocking! I think you're probably right. True. I agree. :