... terrible. A B C C 24C/ The material is made from cotton is usually strong and hard-wearing. A B C D (2 5-2 8) Use the correct form of the word given in each sentence: 25. What about ________________to ... fossil fuels-petroleum, coal, and natural gas. However, burning fossil fuels causes pollution. Also, if we don’t find new kinds of energy, we will use up all the fossil fuels in the twenty-first ... _____________ 31. Air pollution comes from the burning of fossil fuels. _____________ 32. Scientists aren’t doing research into alternative energy sources. _____________ (3 3-3 6) Rewrite the...