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Question 4. Where in paragraph 2 does the following sentence best fit? Fresh air is cleaner than indoor air in many places. A. [I] B. [IV] C...
Đề bài
Question 4. Where in paragraph 2 does the following sentence best fit?
Fresh air is cleaner than indoor air in many places.
A. [I] B. [IV] C. [III] D. [II]
