- 問題詳情:Oneday,MrBlackwentintoarestaurant.Heputhiscoatonachairnearthedoor.Therewasnothinginthepocketsofhiscoat.Afterhehadhismeal,hewenttotakehiscoatback.Hefoundtherewasmuchmoneyinoneofhispockets."Whoseisthis?"hethought.Hesawawaiternearthedoor,soMrB...
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