Điền từ vào ơi trống CHỈ CÓ.5 TỪ CẦN ĐIỀN THÔI

4. The o 5. U languages of Singapore are English, Malay, Mandarin, and Tamil. sewage directly pumped into rivers can cause water pollution. touches down, it can destroy everything in its path. 6. When at with toxic waste from local factories. 7. The river has been p 8. Wellington is th ...