用所给单词的适当形式填空.
1. Can you give me your _______(explain) for your absence?
2. During the Spring holidays there are many _______(culture)activities.
3. In America, we often greet people by _______(shake) hands or hugging.
4. I'll call you as soon as I _______(get to) New York.
5. Could you tell me some special customs that _______(not find) in Chinese culture?
