1. 根据句意及汉语提示，完成句中所缺单词。

1. （1） I began feeling  (尴尬的) when I realized that I had made such a stupid mistake.

3. （2） I  （取消）my appointment with a dentist yesterday because of the bad weather.

5. （3） The message was so  （可相信的）that everyone in our class believed it.

7. （4） Don't tell a lie! Nobody should be  (愚弄).

9. （5） The  (发现) of oil in Shandong was exciting news.