<p>For example : "He listed the order from greatest change to least"</p>
<p>Can I just leave it as "least" or do i have to follow some parallel structure and put "least change". </p>
<p>another similar example: "...in_____ or _____"</p>
<p>do I need to repeat an "in" for the second blank? or does it depend on something. Thanks!</p>
<p>"He listed the order from greatest change to least" is fine (though I would probably say "from the greatest change to the least") -- people can fill in that blank.</p>
<p>I find that I need to consciously think about what chunks of the sentence are separated by "or". I'm willing to say "My biology syllabus is in my biology textbook, my biology notebook, or my backpack," for instance. I'm also willing to say "My biology syllabus is in my biology textbook, in my biology notebook, or under my bed." But I wouldn't say "My biology syllabus is in my biology textbook, my biology notebook, or under my bed."</p>
<p>I generally do these things "by feel" instead of because I know the rules, so it's possible that someone will come along and show me that I'm wrong. It's happened before. But these are the answers that make sense to me.</p>
<p>This is an example of parallelism. You don't need to repeat in, however, make sure that it makes sense when you use "in".</p>
<p>Example: Sarah thought she left her notebook in the classroom, the bedroom, or **the television<a href="doesn't%20make%20sense.%20should%20be%20on%20the%20television">/b</a></p>
<p>If you use parallel structure make sure you follow-through.</p>
<p>Example: I think Sarah found her notebook in the classroom, in the bedroom, or on the television.</p>
<p>Wrong: I think Sarah found her notebook in the classroom, the bedroom, or on the television.</p>