11. A severe tropical is called a typhoon. A. drought B. rain C. flood D. storm 12. As soon as the floodwater down, people their houses. A. went – cleaned B. had gone – cleaned C. went - had cleaned D. had gone – had cleaned 13. If the factory continues dumping poison into the lake, all the fish and other aquatic animals _____. A. die B. to died C. dead D. will die 14. The Maori in New Zealand greet each other by _____ their noses. A. punching B. touching C. blowing D. kissing 15. Australia has the biggest _____ station in the world. A. nations B.cattle C. games D. continents 16. There is a red maple leaf on the _____ of Canada. A. flag B. banner C. money D.currency 17. Water pollution is the _____ in the lake has made the fish die. A. contaminating B. contaminate C. contaminated D. contamination 18. Don’t drink that water. It’s _____. A. damaged B. dumped C. contaminated D. contamination 19. By the time we got to the cinema, the film _____. A. started B. had started C. starting D. was starting 20. The heavy rain has caused _____ in many parts of the country. A. storms B. floods C. mudslides D. drought 21. If we use water _____ ,more people will have cleaner water. A. care B. carefully C. careless D. carelessly 22. Water pollution make some aquatic animals _____. A. dying B. to die C. die D. died 23. The city has a summer _____ in the park . A. festivily B. festive C. festively D. festival 24. English is an _____ language in Singapore A. office B. official C. officer D. officially 25. She prefers English _____ France A. to B. for C. at D. in 26. Three hundred people were left _____ by the earthquake. A. homely B. unhomely C. homeless D. homeness KO CẦN GIẢI THÍCH