Holdingdoorsopen,pickinguprubbish,thankingpeople…thesea...
問題詳情：Holdingdoorsopen,pickinguprubbish,thankingpeople…theseactsofkindnessseemverysmall.ButstudentsatTibbettsMiddleSchoolknowthatit’sthesmallactsthatmaketheworldabetterplace.Eighth-gradersfromNewM...