I am not joking .I’m talking something s（ ）

I am not joking .I’m talking something s（ ） I am joking.Parden I'm only joking I am not sure what your talking she said,"i'm joking." 是什么时态? That's what I'm talking about That's what I'm talking 中学英语语法问题I am not sure what is he talking about.I am not sure I am not talking about people,then,is a I feel very bad.Something I am not I'm sure I am not wrong I am not [ ].I'm full