从以下表格内，选出适当的单词完成句子，使句子意思通顺。
| festival, twelfth, students, busy, October, party |
1. We often have an English ______________________ on weekdays.
2. Mr Green is our teacher. We are his ________________________.
3. Helen is very __________________________ today. She has no time to play.
4. We have an art ______________________________ every year.
5. I’m 12 years old. Today is my _______________________________ birthday.
6. ________________________1st is our National Day (国庆节).