假设你是红星中学高三（1）班学生李华．上周六你和同学骑共享单车去购书时看到某些不文明现象．请根据以下四幅图的先后顺序，以"OurMeaningfulWork"为题，给校刊"英语角"
假设你是红星中学高三（1）班学生李华．上周六你和同学骑共享单车去购书时看到某些不文明现象．请根据以下四幅图的先后顺序，以"Our Meaningful Work"为题，给校刊"英语角"写一篇英文稿件，介绍事情的整个过程．
注意：词数不少于60．
提示词：共享单车 shared bicycle
Our Meaningful Work
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OurMeaningfulWork
LastSaturdaymyclassmatesandIdidsomemeaningfulworkaswewenttobuybooks．
ThatafternoonwerodesharedbicyclestoBeijingBookBuildingasplanned．（高级句型一）Everyonewasexcited，enjoyingtheconveniencebroughtaboutbythesharedbicycles．However，somethingunexpectedhappenedonarrival．（高级句型二）Wenoticedthesharedbicyclesparkedhereandthere，blockingthewayofthepassersby．Oneofmyclassmatesproposedplacingtheminorder，sowegotdowntoworkimmediately．Ittookusabouttwentyminutestofinishthework．Seeingthetidilyarrangedbicycles，weallfeltdelighted．Wealsoreceivedhighpraiseforwhatwehaddone．
Theexperiencecausedmyconcernaboutsharedbicycles．（高级句型三）Ithinkweshouldputtheminplaceafterusingthem，whichnotonlybringsusneatandtidyenvironment，butalsoreflectsqualitiesofagoodcitizen．