I think his work deserves approval as it aligns with the World Heritage Sites guidelines. Furthermore, I believe he showcases a diverse range of structures. To ensure the preservation of his work, they could have sought assistance to properly maintain the sites.
rephrase the sentence: I believe his work should be approved because it falls under the guidelines of the World Heritage Sites. Also I feel like he has a wide variety of structures. To help preserve his work they could have hired help to keep the sites well maintained.
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