<p>Would one say, "As long as I haven't written in it," or, "As long as I haven't wrote in it"? I think it would be the former, but it always seems to stump me while I'm speaking.</p>
<p>The first one is correct. You need to remember that you say “I have written.” Written is the past participle of the verb “to write.” “Wrote” is the simple past tense. It is irregular. Past participles are the most difficult part of English grammar because there are so many irregular ones. It’s confusing!</p>