Mark the letter A, B, C, or D on your answer sheet to indicate the cor

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.    

No one wants to live in a polluted city, ___?

• A. A. do they
• B. B. don’t they
• C. C. does he
• D. D. doesn’t he

Danh từ bất định no one khi chuyển sang tag question thành they
No one mang hàm ý phủ định (không ai muốn) => tag question ở thể khẳng định
=> A