Especially in a selective high school, because I think it's worse when students find out and find out that the teacher didn't know and came up with something. Whenever we came across an example with students in the grammar that I would call controversial, the teacher very definitely determined that there was just one option and in other ways it was wrong.
Whenever we came across an example with students in the grammar that I would call controversial, the teacher very definitely determined that there was just one option and in other ways it was wrong.