The sentence is -
The principal brought the staff ___ to his way of thinking.

So I think the answer is "round" and I'm sure most would agree but can anyone argue in favour of using "on"?

  • 3
    Americans usually use around instead of round.
    – Robusto
    Sep 17 at 15:39
  • As a British speaker, before I saw Robusto's comment I was thinking 'around', but 'round' isn't wrong. I can't argue a case for 'on'. Sep 17 at 16:44
  • It wouldn't be syntactically invalid to have no "secondary" preposition at all before to. Or we could have over, across, in, up,... - all of which are probably more likely than on. But they're all "valid". It's just a matter of which is most common. My guess is that would be round (for which around is effectively "the same word"), but I certainly wouldn't give it a second thought if I encountered over or across in such contexts. So any "answer" (and associated votes) is essentially a matter of Off Topic opinion. Sep 17 at 16:45