помогите номер 4 пожалуйста

1) It's snowing, isn't it? 2) I am not late, aren't I? 3) You aren't ready, are you? 4) I am not rude, am I? 5) It wasn't dangerous, was it? 6) They were cleaning the flat, weren't they? 7) You will be there all day, won't you? 8) You won't fight with him, will you? 9) There is an additional task in this exercise, isn't there? 10) There are a lot of books in the library, aren't there?