Alike oxygen, which is chemically changed by our bodies into carbon dioxide, nitrogen is merely

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Mark the letter A,B,C or D on our answer sheet to indicate the underlined part that needs correction in each of the following questions.

Alike oxygen, which is chemically changed by our bodies into carbon dioxide, nitrogen is merely exhaled back into the air.

alike

chemically

merely

into

Giải thích

Đáp án A.

Đổi alike thành unlike.

Không thể dùng “alike” trực tiếp trước danh từ vì nó có nghĩa là: giống nhau = like each other, còn “unlike” là giới từ có nghĩa là “different from”.