The air in this area is __________ with smoke from factories.
A. polluted
B. fresh
C. noisy
D. clean
Đáp án A
Giải thích:
A. polluted = bị ô nhiễm
B. fresh = tươi, sạch
C. noisy = ồn ào
D. clean = sạch sẽ
Dịch: Không khí khu vực này bị ô nhiễm bởi khói bụi từ các nhà máy.
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