适合全家人旅游的地方:disappeared down a drain,down 放在这里什么含义?

disappeared down a drain,down 放在这里什么含义? 初一首字母填空:After a few s____,the UFO disappeared. disappeared是什么意思？ The old man completely cuts himself -------from the wold. A up B down C off D/ 谈谈这个乐队 system of a down 关于“堕落体制” system of a down system of a down是哪国人 Your socks are here and there.( )Tom!A Pur them off B Put them away C Put them on D Put them down a+(a+d)+(a+2d)+...+[a+(n-1)d] I can't hold a man down without staying down with him