Verbos to be: empareja las formasVersion en ligne Empareja cada forma de 'to be' con su grupo correcto. par Eliane Rizo Flores 1 Presente afirmativo 2 Presente negativo 3 Pasado afirmativo 4 Pasado negativo 5 Formas interrogativas am is are be being am not isn't aren't is not are not was were been had been being wasn't weren't was not were not am I? are you? is he? was it? were they?
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