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Câu hỏi:
If energy ___________inexpensive and unlimited, many things in the world would be different.
- A. had been
- B. were
- C. is
- D. would be
Lời giải tham khảo:
Đáp án đúng: B
Kiến thức: Câu điều kiện loại 2
Giải thích:
Dấu hiệu: động từ trong mệnh đề chính chia dạng “would + V-nguyên thể”
Câu điều kiện loại 2 dùng để diễn tả một giả thiết trái ngược với thực tế ở hiện tại dẫn đến kết quả trái với hiện tại.
Công thức: If S + Ved/were, S + would V(nguyên thể).
Tạm dịch: Nếu năng lượng không đắt và không bao giờ cạn kiệt, nhiều điều trên thế giới sẽ thay đổi.
Chọn B.
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