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.
