Your work isn't just to learn and say the lines. Your work is to figure out what the chatter in your brain is, that's going on under the lines. It doesn't matter whether you're speaking or not speaking because your mind is working the way your character's mind would work.
“I have never lied about my relationship with Bill Clinton. The only proven liar, at this point, and the only admitted liar, is Bill Clinton; not Gennifer Flowers, not Kathleen Willey, not Paula Jones and not Monica Lewinsky, at this point. He is the only proven liar.”