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1. The interesting activities are what make the volunteer work so unforgettable. 2. His plan does not offer a real solution to the problem. 3. The measures should help create jobs and strengthen the economy. 4. He made a major contribution to peace in the region. 5. The game is an international sporting event with more than three thousand participants. 6. The country is crying out for a change in leadership. 7. I was voted student representative for my class. 8. This sporting event helps offer the opportunity for people with disabilities. 9. Madagascar suffers from a high rate of deforestation. 10. Many animal species are in danger of becoming extinct due to the loss of their habitat and inability to adapt to climate change. 11. Methane is much more dangerous than carbon dioxide. 12. Many people are very concerned about the destruction of the rainforests. E. CHIA ĐỘNG TỪ- THEO THÌ ĐỘNG TỪ VÀ DẠNG ĐỘNG TỪ (NB-TH) I. Complete the sentences with the verbs in the brackets, using gerunds or to-infinitives. (NB) 1. The man denied committing the crime. 2. He has always been afraid of flying. 3. Swimming is good for your health. 4. Would you mind passing me the sugar? 5. She promised to read the report as soon as possible. 6. Paul gave up smoking five years ago. 7. She has often made me cry. 8. I expect to hear from you by Monday. II. Supply the correct form of the verb in the brackets. (NB) 1. How old were you when you learned to drive? 2. I don't mind walking home but I'd rather get a taxi. 3. I can't make a decision. I keep changing my mind. 4. We had to keep him from falling off the cliff. 5. He had made his decision and refused to change his mind. 6. It was a good holiday. I enjoyed being by the sea. 7. I spent a lot of time making a birthday cake for him. 8. He agreed to see me at ten o'clock. 9. They promised to read my report today. 10. I suggest paying by check, it's safer than cash.