治疗口腔尖锐治疗费用:“They knock the doors and windows.”中有什么错误

“They knock the doors and windows.”中有什么错误 what are __ the door?-- they are some brooms. Listen, someone______(knock)at door knock at the door(下一站彩虹的主题曲）mp3下载 要Knock on the heaven's door（Bon Jovi unplugged版本）吉他谱 21,The door didn’topen ___.They had to kick it open.Ahowever Bsomewhere Canyhow The Girl Next Door the rpotection door是什么意思 at the door 得意思 --Did you close the door?