？행복한학교를만들려면각자맡은일열심히하기입니다왜냐하면우리가생활하는교실에먼지가날리면공부하기가어려웁니다.또우리가새활하는교실과복도가개끗해야즐겁게새화하행복한생각을할수있기때문입니다.또반마다청소시간을만들면복도,창문,바닥등을청소하면반이깨끗해질겁니다.                                                                                                                                                                                                                    ？？？？