一道初三英语竞赛题!Mum walked into the room with a paper bag in eithe

选择B项
Mum walked into the room with a paper bag in either__hand___
A.side B.hand C.door D.one
因为in door和in one词组在这里没有意义,不能选择C,D
A项in eight side在这里解释不通,如果句意是一个每边有一个纸袋的房间的话应该这么说:
Mum walked into the room where's a paper bag in either side
应该用"where"引导的定于从句修饰"room"
这里用"with"表示携带着的意思
所以,只能选择B项