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Câu hỏi:
The river is heavily polluted. They should _________.
- A. clean it up
- B. give it away
- C. pick out
- D. recycle it
Lời giải tham khảo:
Đáp án đúng: A
The river is heavily polluted. They should clean it up.
Dịch: Dòng sông bị ô nhiễm nặng. Họ nên dọn dẹp nó.
Chọn đáp án A
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