1 . ________ (幸运地), I found my lost key on the sidewalk. (根据汉语提示单词拼写)

2 . He says that _________ (戒掉；停止) smoking is the easiest thing in the world, for he has done it hundreds of times. (根据汉语提示单词拼写)

3 . She was cheerful and _________ (精力充沛的) throughout her trip. (根据汉语提示单词拼写)

4 . She was so _________ (鼓舞；激励) by the people she met online. (根据汉语提示单词拼写)

5 . This ____________(挑战)might sometimes put you under pressure. （根据汉语提示单词拼写）

6 . He had to choose between ____________ (死亡) and dishonour. (根据汉语提示单词拼写)

7 . Tipping is ____________ (正常的) in bars and restaurants here. (根据汉语提示单词拼写)

8 . It’s very important for man to keep the ____________ (平衡) of nature. (根据汉语提示单词拼写)

9 . Any student who tries to _________(作弊) in examinations is playing with fire. (根据汉语提示单词拼写)

10 . She doesn’t think Bob should study _________(在海外). (根据汉语提示单词拼写)