- 问题详情:TheUnexpectedKindnessOfAStrangerYesterday,asIapproachedthefrontdoorofourpubliclibrary,awhite-hairedgentlemansteppedbacktoholdthedoorforme.Yousee,Ihavetogoeverywherethesedayswithawalker,andfolksare61.__________(constant)holdingoropeningdoorsfo...
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