Ai giúp mik biết 5 sao 4. Water _______ in the lake has made the fish die. A. pollution ​ B. pollute​C. polluted​D. polluting 5. _____ workers were sent to the area immediately, but no villager was survived when the landslide happened. A. help B. rescue C. volunteer D. assistance 6. Three hundred people were left _____ by the earthquake. A. home ​B. property ​C. homeless ​D. house 7. The train or Ha Noi ______ at 7a.m tomorrow. A. leaves​ ​B. leaving​ ​C. to leave​ ​D. left 8. Environmental pollution has _____ to lots of health problems. A. caused​B. got​C. made​D. led 9. The heavy rain has caused _______ in many parts of the country. A. drought​B. storms​C. forest fire​D. floods