The word which” in paragraph 4 refers to……………..

Câu hỏi :

The word “which” in paragraph 4 refers to……………..

A. an individual

B. a group

C. noise

D. air

* Đáp án

C

* Hướng dẫn giải

Dẫn chứng: The air into which second-hand noise is emitted and on which it travels is a "commons"

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