12. Every four years athletes from all over the world compete for medals.

11. A new law has been passed to limit pollution of the air.

10. The two official languages in Canada are French and English.

9.Watch out for fire. Sally is burning the fallen leaves in the garden.

8.Film companies ofter make follow-ups to films that have been very successful ,such as SpeedⅡ,Jurassic ParkⅢ.

7.Who do you think is the best director in China,Zhang Yimou,Chen Kaige or Feng Xiaogang?

6. To most actors and actresses,the Oscar is the most important award .

5. It didn’t take long before the wooden building was swallowed　 by the fire.

4. Our teacher has advanced the deadline for handing in homework by one week. So we should be quick in action.

3. When I was passing the National Hall, I heard the clock strike twelve.