1._________________________（ 我刚刚到家 ） than the telephone rang.
　　2.The old man regretted __________________________（ 一事无成 ） in his life.
　　3.____________________（ 他五十多岁 ）, but he looks younger than his age.
　　4.Many big cities in the world ________________________（ 正面临淡水资源短缺 ）.
　　5.He said nothing, leaving me _____________________ （ 对他的计划毫不知情 ）.

　　答案与解析：
　　1. No sooner did I get home
　　2. being nowhere
　　3. He is more than fifty years old
　　4. are facing the problem of lack of water resource
　　5. having no idea about his plan