let sth be done 还是let sth done?

let sb/sth do还是done 请用let/make/have sth done sb造句 是there be sth to be done还是there be sth being done? want sth done和 want sth to be done 区别? have sth done与have sth to be done have sth to be done/have sth done? want sth done和 want sth to be done 区别 have sth done sth? Let It Be Done 歌词 be let to do sth be let to do sth? There be sth to do?和There be sth done?