1. The levels of carbon dioxide in the atmosphere have risen________ the burning of fossil fuels. A. therefore B. because C. in spite of D. due to 2. ________are Chemicals that are used to kill unwanted plants, such as weeds. A. Fertilizers B. Pesticides C. Herbicides D. Pollutants 3. There would be much less pollution________ people stopped using cars completely. A. if B. since C. when D. although 4. ________can we help save our environment? A. What B. How C. Why D. How much 5. __________ your international summer camp going? - It’s just awesome. A. How’s B. What’s C. Where’s D. When’s 6. Since 2005, India__________ the world’s largest English-speaking population. A. has B. is having C. had D. has had 7. English__________ around the world by children in school as a foreign language. A. has learned B. is learning C. is learned D. learned 8. In the 16th century, French and British settlers__________ in Canada. A. arrive B. have arrived C. was arriving D. arrived 9. My family__________ in Chicago for more than 20 years. A. live B. are living C. were D. have been 10. Last summer, Mike spent two weeks__________ a summer camp. A. for B. in C. on D. at 11. The inhabitants of Scotland are called__________. A. Scotlanders B. Scotlish C. Scots D. Scotchs 12. Her English accent is so good that she is thought of as a__________ speakers. A. natural B. official C. non-native D. native 13. Susan looks forward__________ a music camp, where she can sing and dance. A. to attend B. to attending C. to be attended D. be attending 14. Air pollution has many effects_________ the environment and living organisms. A. in B. of C. for D. on 15. The volcano has erupted approximately once every ten years_________ 1970. A. since B. in C. from D. for 16. In the 1980s, acid rain_________ widespread damage to forests in the areas. A. made of B. resulted in C. led for D. caused by 17. _________ plastic takes so long to break down, it pollutes the land and water. A. Even though B. While C. Since D. Because of 18. If I had the chance to take part in an International summer camp, I_________ very excited. A. am B. was C. will be D. would be 19. _________ do earthquakes usually last? - Less than one minute. A. How strong B. How long C. How often D. How far 20. “A hurricane is heading toward our home town.” - “_________” A. That’s a relied. B. How interesting! C. Glad to hear. D. Oh my God! 21. If the local people________ fresh water, they wouldn’t have to use polluted water A. has B. had C. have D. were 22. These fish________ if the factory ________ its toxic waste into the river. A. does not die – would not dump B. were not die – would not dump C. did not die – would not dump D. would not die – did not dump 23. If people stopped using cars completely, there_______________ much less pollution. A. will be B. are C. would be D. were 24. If we all use public transport more, we______________ reduce air pollution. A. will help B. would help C. help D. helped 25. If the air in a City______________ very polluted, it can affect people’s health. A. get B. gets C. will get D. would get