5.使用时免费。

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Nowadays, WeChat has been a part of our life. It is becoming more and more popular with young people because of the following advantages. First, we can communicate with our friends by sending words and expressions very quickly. Second, we can share pictures, music and videos with them. Third, we can not only send voice messages to them but also speak to them directly. Besides, we can use it in any time. Last but not least, we use it for free and can save money. In my view, although WeChat has improved our lives, it should be used properly. We shouldn't lose ourselves in it.