Giải hộ tớ nhé :33333

Reading

46. Man makes the air polluted

=> "Man dirties the air with gases and smokes"

47. People poisons the water with chemicals and other substances

=> Dòng 2 đoạn 1

48. Man damages the soil with too much fertilizers and pesticides

=> ... and damages the soil with too much fertilizers and pesticides

49. People ruin natural beauty by scattering junk and filter on the land and in the water.

=> Dòng gần cuối của đoạn 1

50. Environmental pollution 

=> Environmental pollution is one of the most serious problems facing mankind today