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Here are the answers to the blanks: 1. There **are** several things that I can do to reduce my carbon footprint. 2. Firstly, I **should** save energy. 3. I can do this by turning **off** all the electrical appliances when they are not in use and taking shorter showers. 4. This will help me not to **waste** energy. 5. Instead of asking my dad to **take** me places, I should start using public transport like buses or trains. 6. Finally, I can reduce **the amount of** air travel I take because planes use more energy than other means of transport. Corrected sentence: "There are several things that I can do to reduce my carbon footprint. Firstly, I should save energy. I can do this by turning off all the electrical appliances when they are not in use and taking shorter showers. This will help me not to waste energy. Instead of asking my dad to take me places, I should start using public transport like buses or trains. This will reduce the harmful gases in the air, therefore making it cleaner. Finally, I can reduce the amount of air travel I take because planes use more energy than other means of transport." Here are the answers with the correct tenses: Question 31. My father enjoys watching movies every Friday. Question 32. Thomas Edison invented the light bulb in 1879. Question 33. She hasn't finished writing the lyrics yet. Question 34. While I was watching TV, the phone rang. Question 35. I was walking down the street when I saw her. Question 36: The room is cleaned every day by Linda. Question 37: This train ticket was ordered by Tim for his mother.