Both Kate's classroom and the teacher's office are on___eighth floor. 为什么答案是不填?

Both Kate's classroom and the teacher's office are on___eighth floor. 为什么答案是不填?
Both Kate's classroom and the teacher's office are on___eighth floor. 为什么答案是不填?

Both Kate's classroom and the teacher's office are on___eighth floor. 为什么答案是不填?
要用the, 特指
floor 作为单数可数名词,前面不能没有限定词---序数词前用the

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the 不是特指 序数词前和最高级前 用定冠词the 答案错了 答案也有错的时候

要加the的吧 系数词前面要加的