Completar frases Modal verbs: can, could, should, must, have to.Versión en línea Complete the sentences with the correct form of the modal verbs: can, could, should, must, have to. por SARA ORTEGA MARTÍN 1 should ? could ? have to ? can ? must positve or negative 1 . Debbie go to the party because she was ill . 2 . I ? m busy in the morning but we meet in the afternoon . 3 . Lisa buy clothes . She makes her own . 4 . Mike go out without a coat . It ? s freezing outside . 5 . Olivia stop spending all her salary on clothes . 6 . I get a copy of the latest fashion magazine . 7 . You swim here . It ? s dangerous . 8 . She cook tonight . We ? re having dinner at a restaurant . 9 . These questions are easy . I answer all of them . 10 . I phone you because my phone wasn ? t working .