In Whom^x, Negations^x

Here are some examples The main point is to explain the correct answerThe sentences are little-bit childisch ;they are some modified sentences. I am afraid that my explanations seems to be a little childisch, too. So please help me how to turn it into the right explanation. Mary was real angry...

Do existed in Old English more than a thousand years ago as a regular verb and meant to cause. It is impossible to say who introduced it to English. It's use as an auxiliary in questions and negations was established in Shakespeare's day when it was correct to say bothI know not himandI...

Wow, thanks everyone! (Everybody doesn't fail to be a person whom I appreciate.)