Here is a context clues worksheet on the verb realize, which is transitive only; when I saw that in the dictionary, I realized that the direct object that follows this verb must about always be a noun phrase beginning with that (or maybe a pronoun in the nominative case, even though that pronoun is usually preceded by that), so that may be one thing you want to emphasize when you teach this word.
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.