Ⅰ. 根据句意及首字母提示完成单词（10分）
1. There are at l_______ eight hundred students in our school.
2. He was late again because of the busy t_______.
3. You could write a thank-you n_______.
4. —How old is the b_______?
—Only two months.
5. Many of the boys are f_______ of Jackie Chan.
