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题型：单选题题类：模拟题难易度：普通

Beijing is one of the _______ in the world today.

A、busiest city B、busiest cities C、busy city D、busy cities

举一反三

Han Han is one of __________ teenager writers today, though some old writers don't like him very much.

Many people think that Sanya is one of to live in China．

I think Hainan is one of in China.

The Changjiang River is one of ____ in the world.

用方框中所给词语的适当形式填空

France; send; busy; travel; count down

用方框中所给词语的适当形式填空。每词仅用一次。

noise; send; little; role; all one's life

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