作业精灵老师示例：
1. Wang Bing always puts his things
in order. He usually finishes his
homework before dinner. He is a
good boy. He has a good habit.
2. Liu Tao often does his homework
late at night and doesn't go to bed
early. He has a bad habit. He should
do homework before dinner and go
to bed early.
3. Yang Ling listens to her teachers
carefully. She does well at school.
She is a good student. She has a
good habit.
4. Mike always helps his mother
wash the dishes. He does well at
home. He has a good habit.
