Ⅰ. 根据句意及首字母或汉语提示完成单词（10分）
1. He works in a post office. Sending m________ is his job.
2. I hope to win an a________ in the writing competition.
3. You are on duty today. It’s your t________ to clean the blackboard.
4. The band has been active on the music ________ (舞台) these years.
5. I hear lots of famous musicians will ________ (出现)at the concert.
