Though I have no idea what the new film is about,前面为什么用what?

Though I have no idea what the new film is about,前面为什么用what? Though I have no idea ( ) the new film about ,I know it is p U have no Idea what I have been Though She has no idea of what the book is about.She __ have read i I really have no idea what I shall talk about. I had no idea what you are talking about.这句话what前面为什么不加介词,比如 I really have no idea about with my sister.A.what’s the matt I have no idea what to I have no idea what do you You have no idea what I feel Jim,I have no idea about which ______ to buy.What should I d I have no idea what she said,something about airline travel,