一道英语动宾结构省略的问题You should always rememeber to knock the door when___英语解答

一道英语动宾结构省略的问题
You should always rememeber to knock the door when_______(enter)the room.
用enter的正确形式填空,并说明理由.

人气：198 ℃　时间：2020-05-20 03:48:56

解答

entering the room=when you enter the room的省略形式的表达.