Correct answer: quieter.

In other words, the library is quieter than the classroom.

The library is quieter than the classroom.

Analysis: this question is to fill in the blanks with the correct form of the given words. Because the position in the air is predicative after is and there is a ratio behind it, it is quiet to fill in the comparative degree of adjectives.

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I hope I can help you, and I would like to go to the next level o (∩ _ ∩) o.

If you don't understand, please keep asking questions. Can be discussed in detail (* _ _ *)

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