1. Once ________ (译成) Chinese, the book became very popular with Chinese teenagers. (translate)
2. Everyone present at the conference agrees that the suggestion ________ (学生应该学点实用的东西)
    is worth considering. (learn)
3. If you want _______ (确保赶上) the plane, take a taxi. (ensure)
4. ________ (在紧急情况下保持镇静) and knowing what to do can mean the difference between life
    and death. (calm)
5. _______ (未来的生活是什么样子) is the topic for today's class discussion. (be)
6. Jill has been living with HIV/AIDS for twelve years. How I wish she ________ (没有感染) it! (infect)
7. Dr Smith, what I want to know is _________ (全球变暖对地球会有什么影响). (effect)
8. Despite the fact that he met some native speakers face to face for the first time, he _________
   (设法使自己听懂) in his broken English. (manage, make)
9. Not until I listened to some speakers _________ (我才意识到) that many of the things I do every
    day are bad for the environment. (realize)
10. It is perhaps still unknown to some that 20％ of the people on earth ________ (喝不到) clean 
     drinking water. (access)