1. _______________（青少年犯罪的主要原因是由于）that social environment is becoming worse.
　　2. The workmen think _______________（遵守安全规则很重要）.
　　3. The new government was accused _____________（未实现其降低失业率的承诺）.
　　4. Only with combined efforts，________________（我们才能期望台湾不久有新的面貌）.
　　5. Several thousands of quake-smitten inhabitants ________________（得到了政府充分的救济）.

　　答案与解析：
　　1. The main reason why juveniles commit crimes is
　　2. it crucial to abide by the safety regulations
　　3. of unfulfilling his promise to lower the unemployment rate
　　4. can we expect Taiwan to take a new face in due course
　　5. got plentiful relief from the government