根据句意及首字母或汉语提示完成下列句子。   

1. I was supposed to a             at 7:00, but I arrived at 8: 00.    

2. He k           his wife and children saying goodbye.    

3. It's polite to shake h             with others in China.    

4. What are people in our country                (应该) to do when they haven't met for a long time?    

5. His______(习惯) is to get up early and have a cold bath.