isJimintheclassroomn的精選

問題詳情：―Excuseme，isJimintheclassroomnow？―He_____beintheclassroombecauseIsawhimgotothepostofficejustnow.A．must      B．mustn’t        C．can’t       D．needn’t【回答】C知識點：情態動詞...