Đọc đoạn văn và chọn câu đúng *bổ sung thêm câu 2) What causes the air pollution? A. Fumes from vehicles B. Poisonous gases from factories. C. Waste from everywhere D. All are correct 3) The sea has become polluted because of..... A. Oil spills B. Factories wastes C. Smoke from factories D. A and b are correct 4) in order to make the world a better place to live, we...... A. Should not prevent pollution B. Should find a good solution C. Should kill the fish D. None is correct

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