1.You SHOULD not come to help them tomorrow:the work is done.
2.Peter MUST return the book to the library.We all want to read it.
3.You are hungry.You HAVE TO eat sandwiches.
4.They SHOULD not forget to take their medicine.
5 .It was a very imprortant meeting last week, so we MUST attend it.
6.Mike SHOULD not make notes in the student's books!