Knock at the door before you come in.为什么knock不用ing形式
We make it a rule to knock at the door before you come in.I
Please ____(knock)at the door when you come in.
Tom,____(knock)on the door before you come in next time
you should knock at the door before you the room.为什么用enter而不
knock at the door
几道简单的英语改句子please knock at the door before you come into the
have you heard someone knock at the door?为什么是knock,不是knoking
英语翻译before I come to knock at the door of adulthood,I feel a
You should knock at the door before you you _____ the room.【
knock at the door before entering please句中只有KNOCK AT 一个动词?en
You must knock at the door before you e_____the teachers’off
please knock at the door before you enter the room(同义句转换)