Viết dạng đúng của từ

1) They daren't leave their children _______ for a moment (ATTEND)
2) Many modern refrigerators never need to be ______ (FROST)
3) People who eat a lot often become ______ (WEIGH)
4) She's having a rest because she had been _______ (WORK)
5) He wrote the book alone, so he doesn't have a _______(AUTHOR)