Thetrainswungbackandforth,itswheelsscreechingagainstthe...
问题详情：Thetrainswungbackandforth,itswheelsscreechingagainstthetracks.Outsidethewindowthe 1 coldofwinterruled.Thecarriagewasfilledwithfrozen,self-centered,bored 2 .Suddenlyalittleboypushedhi...