What must and must not you do at school?
eat in class * forget your books * use a mobile telephone at the lesson *write on your desk*
listen to your teacher * shout in class * forget to wear your uniform * talk to one another *
do tests without your classmates' help * do your homework for every lesson* be polite to one another
You must be polite to one another.
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You must listen to your teacher You must do test without your classmates You must do your homework for every lesson You must be polite to one another ....You mustn't eat in classYou mustn't forget your books You mustn't use a mobile phone at the lesson You mustn't write on your desk You mustn't shout in classYou mustn't to forget to wear your uniform