I.词汇。（15分）
根据句意，用括号内所给词的适当形式填空。
1. Can you find the______(different) between Lily and Lucy?
2. Many children are away from school because of______(ill).
3. On weekends they often go______(fish).
4. After a______(quickly) breakfast, Tom went to work.
5. It's important to eat a______(balance) diet.
