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.
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Sinh Học lớp 12
