If you can use it, here is a context clues worksheet on the verb adhere. It’s used both intransitively and transitively. It seems like a word students ought to know by the time they walk the stage at their graduation.
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.