Ⅰ. 根据句意及首字母提示完成单词（2分钟，5分）
1. We went to a summer c______ last year.
2. There w______ many trees on the mountains five years ago(以前).
3. We are studying hard for e______.
4. —He was an English teacher.
—R______? Did he teach you?
5. What an a______ classroom! It’s too dirty!
