ncjxjdbfbfbfb

13. A. bargaining 14. B. shopaholic 15. A. on 16. C. open-air 17. B. While 18. C. will start 19. B. started 20. C. volcanic 21. B. reduce 22. D. single-use 23. C. natural 24. A. endangered Here are the correct answers: 1. When Mayon volcano in the Philippines **erupted** in 1818, it destroyed the town of Cagsawa. (past simple tense, "erupted" is the past form of "erupt") 2. While he **was working** on the field, the tornado hit the area. (past continuous tense, to show an ongoing action in the past) 3. **Did you watch** TV last night? (past simple tense, to ask a question about a completed action in the past) 4. We frequently **purchase** items with the conviction that we need them. (present simple tense, to describe a habit or a regular action) 5. My sister, Ana, was travelling in Miami when the hurricane **struck** the city. (past simple tense, "struck" is the past form of "strike") 6. **Were you travelling** on the road near the mountain when the landslide happened? (past continuous tense, to ask a question about an ongoing action in the past) 7. I have to wait as soon as my mum **comes** home. (present simple tense, to describe a regular or expected action) 8. If I have enough money, I **will buy** a new house. (future simple tense, to describe a possible future action) 9. If They **had arrived** early, we could have solved this problem soon. (past perfect tense, but in this case, a more common answer would be "If They **arrived** early, we can solve this problem soon", using present simple tense in the condition and present simple or future simple tense in the main clause) Here are the answers: 1. Everybody in our neighbourhood can do something to make it green. 2. As soon as he arrives, we will have lunch. 3. A total carbon footprint is the amount of greenhouse gases.