71.FortheJapanesefestivalObon,peopleshouldgotocleangrav...
问题详情：theJapanesefestivalObon,peopleshouldgotocleangravesandlightincensei______ m_________ o_____theirancestors.areputtingtoomuchcarbondioxideintotheatmosphere,whichp_____heat f____escapingfromth...