【推荐1】The key to becoming happy is________ you treat your life and work. （用适当的词填空）

【推荐2】阅读下面材料，在空白处填入适当的内容或括号内单词的正确形式。
1. When deeply ______ (absorb) in work, my head teacher always forgets all about eating and sleeping.
2. I am working on a project _____ behalf of my class about campus bullying (霸凌).
3. Privately-owned kindergartens have come into ________ (exist) since the 1980s.
4. The government calls on citizens to raise ______ (aware) of protecting the environment.
5. While writing compositions, students should avoid slang, cliché (陈词滥调) and ______ (formal) words.
6. The star of the film is a ______ (previous) unknown actor.
7. When you get separated from your mother, please remain _______ you are.
8. I would appreciate ______ so much if you could contact me at your earliest convenience.
9. Last year, Karl ______ (admit) to the Music Academy as a full-time student.
10. I really want to know _____ my girlfriend is up to so I send her a text message.

【推荐3】________some students are not aware of is ________difficult life can be if they are not devoted to their study. (用适当的词填空)