Ex 6. Write the correct tense or form of the verbs in brackets. 1. Until now, 38,000 people ___________________ (evacuate) from the flood-affected areas. 2. Typhoon Ketsana _______________ (now/ move) west, threatening to hit Central Vietnam in the Corning days. 3. About 500 ha of pine forests______________ (destroy) by a fire last month. 4. Can we predict when a volcano_________ (erupt)? 5. The crops failed because it________________ (not rain) all summer. 6. Forest fires _____________ (may/ start) by people or by lightning in storms. 7. A powerful earthquake (strike) ____________Southern California on Friday night. 8. Scientists do not use the term “tidal wave” because tsunami waves (not cause) _____________ by tides. 9. The Amazon_________________ (already/ lose) around 17 percent over the past 50 years. 10. I_____________________ (never/ experience) such a big earthquake before I_________ (go) to Java island. 11. Natural disasters can force people_________ (leave) their homes. 12. If you are trapped in a collapsed building, cover your mouth with a cloth to avoid ____________ (breathe) dust.