1. must
2. can't
3. can't
4. don't have to
5. have to
B
In Russia you can't stay late outside until you are 18
Next week i have to do some exercises
During an exam you mustn't write off
You don't have to do your home task at the weekend
You must repeat new words when you learn a language
You musn't talk on your mobile phone while driving
Every day you have to clean your teeths
When you are a child you don't have to wash the dishes