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I'm Anne, a 13-year-old girl. I have a brother. His name is Steve and he's 15 now. We're in the same middle school, but we're not in the same class.

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We all know middle school students must sleep for about nine hours a day. But I find many of them don't have enough sleep. Getting enough sleep can help us keep healthy. Then how can we do that? Here are some useful ways.
※
Some students like to go to bed late on Saturdays and Sundays. But it's not right. To have a good sleeping habit, you must go to bed and get up early every day.
※Say no to your phone and TV
Don't play on your phone or watch TV before going to bed. It's not good for your sleep.
※Don't eat too much in the evening
Don't eat too much for dinner. You can have a cup of milk before going to bed. It is healthy and can help you sleep well.
Going to bed late is not good for us. We should go to bed early and get enough sleep. Then we can have a healthy life.
阅读短文，回答下列问题。（21到24题每个题目的答案不超过5个词，25题不超过15词）
21. How long is Anne at school each day according to her schedule?

22. Which activity do students spend the most time on before bed?

23. What can we do to sleep well before going to bed?

24. What is the best subtitle(小标题) for “※”?

25. What can you do to improve your sleep in your daily life?

21. Nine and a half hours.
22. Playing on their phones.
23. Drink a cup of milk.
24. Keep good sleeping habits.
25. I'll go to bed early and not play phones before sleep.

21. 查看Anne的日程表，她早上8:00到校，下午5:30离开学校，计算后可知在校总时长为9.5小时，符合题干不超过5个词的要求。
22. 观察睡前活动的饼状统计图，占比最高的项目为玩手机，占比达38.63%，符合题意要求。
23. 根据原文第三条助眠建议，睡前喝一杯牛奶可以帮助提升睡眠质量，答案字数符合要求。
24. 该段落核心内容是倡导大家养成规律的作息，每天早睡早起，不要在周末熬夜，提炼出符合字数要求的祈使句小标题即可。
25. 本题为开放题，结合文中给出的助眠方法，写出符合日常实际、不超过15词的合理表述即可。