Fill in the Blanks Verb To beOnline version Praticando Interrogativa e negativa. by romilson gomes 1 very dogs Are they is Mary doctor a am Is Those curtain are black father best I not doctor my your a not my friend red not Is intelligent 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 . ?