How to inform the teacher of the holiday?

The best way is to send text messages, send mass messages, in many ways. You can make phone calls by yourself without a mobile phone, and now social phones are generally turned off, so you can write letters by yourself without a phone, so as to ensure that everyone can receive them. ,。 I suggest you don't use blogs. How can you surf the Internet without a mobile phone? You'd better do some preparatory work and record the ways that each student can contact. Look at those who send text messages, make phone calls and write letters. . Although it is more troublesome, the effect and quality will be better.