Viết câu dựa vào cụm từ cho trước

1. I must/musn't/needn't go to bed late tonight.
2. Benny must/musn't/needn't work harder. He is going to fail his exams, if he doesn't.
3. We must/musn't/needn't go shopping this afternoon. The fridge is full.
4. We must/musn't/needn't give Fran a big present. Something small will be Ok..
5. I'm going to tell you a secret, but you must/musn't/needn't tell anyone!
6. You must/musn't/needn't cross the street at the pedestrian crossing. 
7. You must/musn't/needn't shout! I can hear you!
8. You must/musn't/needn't smoke in restaurant in the UK. It's illegal. 
9. You must/musn't/needn't do your homework on time!
10. We must/musn't/needn't forget Helen's birthday. It's next Tuesday. 
     Bạn nào làm đc, mik cho 10 xu và tick điểm nha!! Thanks bn nhìu !!!