7. Ten people trapped in collapsed builidings have been treed by rescure workers.

8. The chernobyl nuclear accident made the area is uninhabitable.

9. Because of a loud noise next to my door, I couldn't sleep.

10. He said that he had decided to become an astronomer.

11. Our teacher said we were learning more about our universe.

12. Lena said that she enjoyed chatting on the phone with her friends

13. She said she would hand her assignment to the teacher the next day.

14. Phong told me he had read a book about life on other planets.

15. The interview asked him if he went for a walk every day.

16. The interview asked Ba how many aliens he had seen.

17. Ba said if we would still have traffic jams in 30 year's time.

18. Hoa told me that she hadn't attended the science class the previous day.

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