One Tree Hill Stars Celebrate 20th Anniversary Of Premiere ' ' The Show's

I want to know what the constraints are on using the phrase one of the. Is it used correctly in this example? I have two assignments, one of which is done.

One Tree Hill Cast Reunite to Celebrate 20th Anniversary of Show

He is one of the soldiers who fight for their country. I watched a video tutorial that the teacher said. 合作品牌 200+， 平均每1.5天就有一个品牌选择信赖one 出版 12本新书， 每个月都有1本陪伴你的好书 单单one文艺生活公众号， 800+次推送，篇篇10w+ 5次高精度事件营销， 让每一次.

Which one is grammatically correct or better?

I have two assignments, one of them is done.

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