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.
If people paid more attention to the environment, the Earth_________ greener.
A. would be
B. will be
C. would have been
D. had been
If people paid more attention to the environment, the Earth_________ greener.
A. would be
B. will be
C. would have been
D. had been
Câu điều kiện loại 2 Mệnh đề chính
If + S + V-ed/ V2, S + would + V
If + S + V-ed/ V2, S + would + V
Đáp án A.