Introductory it as Object
2.1 V it to n that
The verb is followed by it, a prepositional phrase beginning with to, and a that-clause. The prepositional phrase always indicates the person who someone addresses.
They'd already broken it to the troops that there was to be no brief period in reserve as promised.
When I interviewed him again I put it to him that he'd lied to you and to me about not seeing his wife that afternoon. And he just caved in.
In the case of put, there is a passive pattern it be V-ed to n that, where it is the Subject of the clause.
He was rattled when it was put to him that his power has diminished.
The verb drum has the patterns V it into n that and be V-ed into n that.
break drum put
They drummed it into me that you were not to know.