A. 接続詞 once, now(that)の用法
  1. Once Peter arrives, we can start right away.
  2. Once the oryx were caught, the London zoo offered more animals.
    cf. Keiko once lived in Rome.
  3. Now (that) you have got the prize money, you can buy a nice camera.
B. 強調構文
  1. It is only in this case that he the government takes care of its citizens.
    cf. The government takes care of its citizens only in this case.
  2. It is we human beings ourselves who receive the most from the program.
  3. It was his neighbors whom he encouraged to clean up toe park.