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1. It's rude to read others' p       letters without permission (允許).

15.         (澳大利亞人）are proud of the Opera House in Sydney.

14. Thank goodness！   My pet dog is still        (活著的)after the earthquake.

13. There are fifty        (州)in America.

12. He heard a       (突然的)noise when he was reading carefully.

11. Don't look at me in such a      (奇怪的)way.

10. They tried their best to keep the       (敵人)out of their country.

9. ―Do you like swirntning?

―Yes,but I        (更喜歡)sailing.

8. We will         (準備）fruit for the picnic 

7. There are four      (單元) in this book.