谁: who在: exist; be living敲门: knock at a door有人在敲门: somebody's knocking at the door. i'll answer it谁在敲我的门: who's that knocking at my door敲门: knock at [on] a door敲门,敲门”: br /knock,knock谁在乎: who cares谁在线: who is online敲门,窗等: knock at敲门声: tap-tap敲门者: knocker敲门砖: a brick picked up to knock on the door and thrown away when it has served one's purpose -- astepping-stone to success; ways and means to seek favour敲敲门: knock at the door; knock knock我敲门: i knock at the door有人在敲窗子: somebody is knocking on the window看谁在尖叫: nightwatch看谁在说话: look whos talking; teyandei baby谁在唱歌: dj rainman; djrainman-remix谁在那儿: who is there谁在那里: who's there谁在你身边: who will save your soul谁在你心里: sam'sangels谁在说抱歉: who’s sorry now谁在讨论: look whos talking