FALSE SYNTAX.
I know it to be they.
Improper, because it is in the objective case before the verb "to be," and they is in the nominative after; consequently, Rule 21 is violated. They is in apposition with it, therefore they should be them, in the objective after to be, according to Rule 21. (Repeat the Rule.)
Be composed, it is me.
I would not act thus, if I were him.
Well may you be afraid; it is him, indeed.
Who do you fancy him to to be?
Whom do men say that I am? Whom say ye that I am?
If it was not him, who do you imagine it to have been?
He supposed it was me; but you knew that it was him.