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b. Solar energy is a renewable source. c. Many countries are investing in solar energy. d. It helps reduce pollution and save fossil fuels. Choose the correct order: A. a – b – c – d B. b – a – d – c C. b – d – a – c D. c – a – b – d Exercise 5 a. I often take part in local volunteer projects. b. Volunteering is a meaningful activity. c. It teaches us important life skills. d. We can make a difference in our community. Choose the correct order: A. d – c – b – a B. b – a – c – d C. a – b – c – d D. a – c – d – b Exercise 6 a. People there are friendly and helpful. b. I love coming back there every summer holiday. c. It has green fields and small rivers. d. My hometown is a quiet and peaceful place. Choose the correct order: A. d – c – b – a B. b – c – d – a C. a – d – c – b D. a – c – b – d Exercise 7 a. We played it in the garden after school. b. Those were wonderful memories. c. It was our favorite game. d. When we were young, we loved playing hide and seek. Choose the correct order: A. a – b – d – c B. d – a – c – b C. a – c – b – d