have to , don't have to, mutsn't modal necessity

You (a)   bring water. There are drinking fountains all around the school.

You (a)   bring anything dangerous to school.

You ________be on time for classes.

• must

• both

• have to

You (a)   use mobiles or other handheld devices during class.

You (a)   bring snacks. Fruit is provided for all students at break time.

You (a)   bring lunch, but you can if you want. Packed lunches can be eaten in the dining hall.

You (a)   eat or drink in the classrooms. Food and drinks are only allowed in the dining hall.

You (a)   stay on the school premises after six o’clock. The school is closed to students after this time.

You __________book the sports rooms in advance. Students are not allowed to use the sports rooms without permission.

• must

• have to

• both

All sports facilities are free. You (a)   pay for them.