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.
