Ⅰ. 根据句意及首字母提示完成单词(10分)
1. He was o______ a driver, but now he is a college student.
2. The children e______ themselves on the farm last week.
3. Who can a______ this question?
4. You must r______ all books to the library before Friday.
5. Yi Siling won (赢得) China’s first g______ medal in London Olympic Games in 2012.
