1. You must stay at home, if you're ill.
2.I must read "The Lord of Ring" on Monday.
3.You must be quiet.
4.She must study, if she want to get 5.
5. It must be perfect!
1.You mustn't talk with friends during lesson.
2.She mustn't go with us, because she have to study.
3.Paul mustn't go on swimming pool.
4.You mustn't shout at teacher!
5.Lisa mustn't watch TV at night.
1.You needn't buy new jeans.
2.She needn't go on shopping.
3. We needn't milk to make a cake.
4. I needn't go to cinema.
5. I needn't study because I know everything.