Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Our rivers are seriously ___________ and we can't drink the water.
A. pollution
B. pollutants
C. polluted
D. polluting
Our rivers are seriously ___________ and we can't drink the water.
A. pollution
B. pollutants
C. polluted
D. polluting
Phương án D không phù hợp về nghĩa.
Phương án A và B sai ngữ pháp.
Phương án A và B sai ngữ pháp.
Đáp án C.