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,________________(我们才能期望香港不久有新的面貌).
5. Several thousands of quake-smitten inhabitants ________________(得到了政府充分的救济).