新概念英语第一册115课knockknock
咚!》knock, knock!
knock off居然还有这个意思,生活中很常用哦|英语口语|少儿英语|英语
knock!翻开这本书,敵敲门,猜猜门背后藏着什么动
敲门别再说knockthedoor老外听了可能要报警
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