IV. Choose the best answer 1. If we use water………, more people will have cleaner water. A. care B. carefully C. careless D. carelessly 2. Water pollution make some aquatic animals…….. A. dying B. to die C. die D. died 3. The team’s success was large ….. to her effort. A. because B. due C. since D. because of 4. English is an …….. language in Singapore. A. office B. official C. officer D. officially 5. She prefers English ……France. A. to B. for C. at D. in 6. Three hundred people ….. homeless by the earthquake. A. left B. were leaving C. were left D. had left 7. By the time we got to the cinema, the film …………. . A. had started B. started C. starting D. has started 8. By the time we _______ to the cinema, the film had started . A. had got B. got C. were getting D. get 9.Many people die………..food poison today. A. at B. of C. in D. on 10. The team’s success was largely __________ to her efforts. A. because B. due C. since D. however 11. I often drink coffee, but today I __________ tea. A.am drinking B. drink C. drank D. drinks 12. If you __________ the president, what would you do to help the environment? A. are B. had been C. were D. was 13. Eating too much sugar can __________ to health problems. A. cause B. lead C. make D. take 14. I like ______________ back my home village on holiday. A. comes B. come C. came D. coming 15. Water ________________ in the lake has made the fish die. A. pollution B. pollute C. polluted D. polluting 16. Mi and Nick like ______________ back Mi’s home village on holiday. A. comes B. come C. came D. coming 17. If the factory dumps poison into the lake, all the fish and other aquatic animals_________. A. die B. to die C. dead D. will die 18. Water pollution is the ________________ in the lake has made the fish die. A. contaminating B. contaminate C. contaminated D. contamination 19. If we ______________ water carefully, more people will have fresh water. A. will use B. would use C. using D. use 20. English is an _____ language in Singapore A. office B. official C. officer D. officially