用所给单词的适当形式填空。
1. Students are supposed (arrive) at school on time.
2. —Thank you for your kind (invite).
—It's a pleasure.
3. What should you do when you meet for the ( one) time?
4. I guess you should (ask) what you were supposed to wear.
5. His bike is (difference) from mine.
1. to arrive 2. invitation 3. first 4. have asked 5. different