Fill in the Blanks Verb To beOnline version Praticando Interrogativa e negativa. by romilson gomes 1 Is are am Mary doctor Are doctor intelligent a not not is best dogs Is a black friend not Those my I your very they curtain my red father 1 ) Passe as frases abaixo para forma negativa . a ) Mary is a doctor . . b ) I am your best friend . . c ) Those dogs are black . . 2 ) Passe para interrogativa . a ) My father is a doctor . ? b ) My curtain is red . ? c ) They are very intelligent . ?