阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
Withoversevenbillionpeople61.____(live)onourplanettodayit'seasytothinkthatoneperson'sactionswon’tmakeadifference.
Howeverfrom62.____(person)experienceIcansaythateveryoneofus63.____(be)abletomakeadifference一howeversmall一tosomeone'slife.
You'veprobablyseenthecampaignposters64.____(produce)bysomecharityorganizationsencouragingyoutodonate£1hereor£2there65.____(save)childrendyingfrommalaria(疟疾) orstarvation.Infactmanyofuswon‘tseethedifferencethattheymake.
Therearemanymorewaysthatyoucanmakeadifference.Whenyounextmakeyourselfadrinkwhynotask66.____anyoneelsewouldlikeone?Orhowabout67____.(offer)yourseattosomeoneelseonthebus?Elderlypeople68____(particular)thosewholivealoneappreciateitwhenpeoplemakeanefforttosayhellotothemandaskhowtheyare.
Ifyouhavetimetosparewhynotvolunteer?Lotsofplacescanbenefit69____.anextrapairofhands!
Youmaynotmakeachangesobig70____.itwillberecognizedbypeopletheworldoverbutit’11beappreciatedbysomeonesomewhere.