9. Scotland is an interesting place to visit with its rich _______ A. culture B. cultural C. natural D. naturally 10. If the air weren’t dirty, I ________________ so much. A. wouldn’t sneeze B. sneeze C. would sneeze D. to sneeze 11. If we ________________ the trees, they will die. A. water B. don’t water C. watered D. will water 12. Water pollution - the ________________ in the lake has made the fish die. A. contaminating B. contaminate C. contaminated D. contamination 13. The Statue of Liberty in New York is a monument which __________ freedom. A. symbolize B. symbolizes C. symbol D. symbols 14. After the storm had hit the village, people there _______________ food and personal things. A. had supplied B. supply C. were supplied D. are supplying 15. Factories _______waste into rivers if the government fines them heavily A. wouldn’t dump B. did not dump C. is not dumped D. won’t dump 16. The kangaroo _____________ a symbol of Australia since 1973. A. becomes B. has become C. has been become D. became 17.The earthquake occurred____________ midday when they were having lunch. A. at B. in C. on D. of 18 .We______any natural disasters before we were trapped in an avalanche (vụ tuyết lở ) last month. A. haven’t experienced B. didn’t experience C. won’t experience D. hadn't experienced 19. What_________ by the time the mudslide occurred? A. had the government already done B. has the government done C. did the government do D. is the government done 20. After our plane ……. , we waited for an hour for our luggage. A. had been landed B. has landed C. had landed D. was landing 21. Many local people said that they_________ such a fierce storm in their life before. A. see B. saw C. have never seen D. had never seen 22. Rescue workers are still trying to ……. the forest fires. A. put on B. put out C. put down D. put i