填空题
Someone must have left the tap on, 1 the water was running over and flooding the bath-room.
【正确答案】
1、for
【答案解析】解析：
Someone must have left the tap on , for the water was running over and flooding（淹没） the bath-room. 有人忘了关浴室的水龙头leave on（让……开着） run over（溢出）