Помогите срочно! 1) Puplis must/ mustn't obey the teacher. 2) Puplis need/ needn't use the Internet at their IT lessons. 3) Puplis have to/mustn't use someone else's book or gym locker,or allow them to use yours. 4) Mobile phon...

Помогите срочно! 1) Puplis must/ mustn't obey the teacher. 2) Puplis need/ needn't use the Internet at their IT lessons. 3) Puplis have to/mustn't use someone else's book or gym locker,or allow them to use yours. 4) Mobile phones needn't/ must be turned off during regular school hours. 5)Students needn't/ mustn't have the following items at school: knives,weapons,dangerous objects,tobacco,drugs,alcohol and gang emblems. 6) You have to/ needn't take off your hats and coats when you enter your classroom.