一道英语选择：The thief stole into the room without _.用noticing、 being noticed、 noticed 、hav...
问题描述：
一道英语选择：The thief stole into the room without _.用noticing、 being noticed、 noticed 、hav...
一道英语选择：The thief stole into the room without _.用noticing、 being noticed、 noticed 、having noticed 中哪个
答
noticed
这个贼没有被发现的（悄无声息的）潜入了房间
被发现,被动时态,be noticed,加在介词without之后,使用v.ing形式,就是being noticed,但此处可省略being,直接填写noticed即可.