Fill in the Blanks MODALS TO EXPRESS DEDUCTIONOnline version COMPLETE THE PHRASE WITH THE CORRECT MODAL VERB. by María M F 1 could must must can't could can't Don't eat it ! It be poisoned ! She isn't answering the phone , she be out . They be Spanish , they're speaking Portuguese . Don't put it up there . It fall off and hit someone . You have worked all day , you be tired . That be James , James wears glasses .