Choose a project you'd like to do. Make new rules and write about why these rules are useful (Создай новые правила безопасности и напиши почему они полезны) Например:"I mustn't open the door for ...

I must wear helmet when I go skateboarding for my head will be protected.

I mustn't speak to strangers for they may have bad intentions.

I mustn't keep secret when somebody is bullied for nobody deserves being bullied.

I must use privacy settings on the Internet for my private information must not be available to everyone.

I must not texting when I cross the road for it is dangerous.

I mustn't open the door to anyone when I am alone at home for very often criminals try to rob apartments when there are no adults at home.