.Comple the sentences with musn"t или needn"t.
1. You ... make noise after 11 pm. 
2. I ... do homework today.I havn"t got any. 
3. She ... wear a school uniform. Wearing a uniform isn"t necessary at her school.
4. We ... bring pets to school.
5. I ... get up early tomorrow. I don"t go to school on Saturdays.
6. We ... use mobile phones in the lessons.