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Câu hỏi:
Global warming ________ if there weren't too much carbon dioxide in the atmosphere.
- A. won’t happen
- B. didn’t happen
- C. wouldn’t happen
- D. happened
Lời giải tham khảo:
Đáp án đúng: C
Kiến thức: Câu điều kiện loại 2
Giải thích:
- Dấu hiệu: Mệnh đề chứa "If", động từ "weren't" chia ở quá khứ đơn
- Cách dùng: Câu điều kiện loại 2 diễn tả sự việc không có thật ở hiện tại.
- Công thức: S + would (not) + V_nguyên thể + if + S + were (not) …
Tạm dịch: Hiện tượng nóng lên toàn cầu sẽ không xảy ra nếu không có quá nhiều khí CO2 ở trong không khí.
Chọn C
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