THE HUMAN RESPIRATORY SYSTEM IS A SERIES OF ORGANS RESPONSIBLE FOR TAKING IN OXYGEN AND EXPELLING CARBON DIOXIDE

21. - Đề thi HK1 Tiếng Anh 10 năm 2019 – 2020 trường THPT Phan Đình Phùng – Hà Tĩnh -
Tiếng Anh Đề thi HK1 Tiếng Anh 10 năm 2019 – 2020 trường THPT Phan Đình Phùng – Hà Tĩnh -
21. The human respiratory system is a series of organs responsible for taking in oxygen and expelling carbon dioxide. a. breathing out b. dismissing c. exhaling d. inhaling Mark the letter a, b, c, or d on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions.