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.    

The country’s infrastructure is in poor condition and needs to be UPGRADED. 

• A. A. improved
• B. B. repaired
• C. C. examined
• D. D. deteriorated

upgrade = nâng cấp
improve = cải thiện
repair = sửa chữa
examine = kiểm tra
deteriorate = thoái hóa, hỏng hóc
=> D