Oneday,anAmericanmanSimonwenttoLondontovisithisfriend,R...
問題詳情：Oneday,anAmericanmanSimonwenttoLondontovisithisfriend,Rick.Ricktoldhimthathisflat(公寓)wasonthefirstfloor.Whenhearrived,Simonwentstraighttothefirstfloorofthebuilding.Butamantoldhimthattherewas...