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Câu hỏi:
If tourists __________ rubbish in the river, the water would be cleaner now.
- A. don’t throw
- B. threw
- C. throw
- D. didn’t throw
Lời giải tham khảo:
Đáp án đúng: A
Câu ĐK loại 1
Dịch: Nếu khách du lịch không vứt rác xuống sông, nước sẽ sạch hơn bây giờ.
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