1 . I'm sorry to hear that you are going to return to your country very soon and I'm writing this email to express my ________ (grateful) for your help. (所给词的适当形式填空)

2 . When I knew that she had won a gold medal，I expressed my ________ (congratulate) to her over the phone. (所给词的适当形式填空)

3 . The Summer Palace, the Forbidden City, the Great Wall and so on are the _________ (represent) of ancient civilization and the wisdom of ancient folks. (所给词的适当形式填空)

4 . I am writing to convey my heartfelt ________ (grateful) for what you have done for me. (所给词的适当形式填空)

5 . I am writing a letter of ________ (congratulate) to you on your being elected as chairman of the Student Association. (所给词的适当形式填空)

6 . He ________ me on my success and nothing is better than receiving my opponent’s ________. (congratulate) (所给词的适当形式填空)

7 . ________, he will show up for special ________. (occasion) (所给词的适当形式填空)

8 . The house is ________ with many toys and their daughter is satisfied with the ________. (decorate) (所给词的适当形式填空)

9 . Most students prefer to learn English while enjoying themselves and having a relaxing ________ (氛围). (根据汉语提示单词拼写)

10 . The next day, I was presented with my award and a certificate at the ________ (典礼). (根据汉语提示单词拼写)