答案：示例完整补全：Because it's bad for his eyes.
转盘其余不同指向的参考对话：
1. 指向男孩打篮球：
— The boy plays basketball.
— He has a good habit.
— Why is it a good habit?
— Because it makes him strong and healthy.
2. 指向男孩课堂上认真学习：
— The boy listens carefully in class.
— He has a good habit.
— Why is it a good habit?
— Because it helps him study well.
3. 指向女孩放学先写作业：
— The girl does her homework first.
— She has a good habit.
— Why is it a good habit?
— Because she can learn well.
4. 指向男孩早起伸懒腰：
— The boy gets up early.
— He has a good habit.
— Why is it a good habit?
— Because he won't be late for school.
5. 指向男孩整理床铺：
— The boy makes the bed.
— He has a good habit.
— Why is it a good habit?
— Because he can keep his room tidy.
6. 指向女孩在洗漱台边看东西边洗漱：
— The girl reads when she washes.
— She has a bad habit.
— Why is it a bad habit?
— Because she wastes much time.
7. 指向男孩醒了还赖床：
— The boy stays in bed after he wakes up.
— He has a bad habit.
— Why is it a bad habit?
— Because he will be late for school.