Yoko is an irresponsible person for several reasons. first of all, he is a careless boy for example, he never settles his bedroom. he makes his bedroom mess and dirty along day. second, he is a lazy boy. for instance, he never washes his dirty clothes by himself. he always orders his mother to wash it. third, he is a  bad boy. in addition, he always comes late to school. he makes himself come late. he prefers to play than study. when he gets a home work, he does not do it well. he always cheats his friend’s homework repeatedly. so we are reasonable to call him the irresponsible person.