As we all know, many of our parents are busy with their work and can't spend too much time with us. Many of us have to be at home alone after school (直到……为止)our parents get home. Here is some common (建议).
Keep your mobile phone with you at all times. Make sure it's on so that you can hear calls or (短信) coming through. You need to make sure that you can reach your parents, and that they can reach you.
Make sure your phone is always "alive"- if a situation comes up suddenly and your mobile phone battery (电池)is run out, you may be (不能……的) to tell your parents about it. Every time your phone is at 25%of the battery or (在……以下), please charge（给……充电) it.
Clean up by yourself. For example, if you eat a (小吃), clean up after eating, and wash the dishes. Leaving a mess for your parents to cleanup when they get home is not only an irresponsible(不负责任的)action, but also a bad habit. It will make your parents (不开心的) too.
Pay attention to potential risks. Be (小心的) about sharing personal information with others on the Internet, such as your (地址)and your parents' jobs. Don't tell (任何人)on the telephone that your parents are not at home. If someone makes a call for your parents, say something like "He or she is in another room. Can I take a message?"
