Complete the 12 sentences below. Choose the best answer for each one.
1It is a school rule that students ............... wear their ID cards during lessons.
Wrong!
Use "must" for a rule that is required by the school.
2Because the notice says 'No phones', students ............... use their phones during exams.
Wrong!
Use "mustn't" to say something is not allowed.
3You ............... leave early only if the head teacher signs your note.
Wrong!
Use "can" for permission in a rule about what is allowed.
4In the computer room, students are ............... bring water in closed bottles.
Wrong!
Use "allowed to" after a form of be to talk about permission.
5Pupils are not allowed ............... run in the corridors.
Wrong!
After "allowed" before a verb, use "to".
6On Friday, everyone will ............... attend the fire drill at 10 a.m.
Wrong!
Use "have to" when a rule says something is necessary.
7The trip is free, so you ............... bring money for the museum ticket.
Wrong!
Use "don't have to" when something is not necessary.
8The sign on the science lab says, '............... the laboratory door closed after class.'
Wrong!
Use "Keep" in notices that tell people to continue a required state, such as keeping a door closed.
9All students must be ............... for morning assembly.
Wrong!
Use "on time" when a rule means not late for a scheduled event.
10For the school trip, please bring a signed ............... from your parent or guardian.
Wrong!
A "permission slip" is the form parents sign to allow a student to go on a school trip.
11Feeling ill, Sara asked her teacher, '............... go to the nurse?'
Wrong!
Use "May I" to ask politely for permission.
12For online safety, students should ............... share their passwords with classmates.
Wrong!
Use "never" when a rule says something must not happen at any time.
Answers
- It is a school rule that students must wear their ID cards during lessons.
- Because the notice says ‘No phones’, students mustn’t use their phones during exams.
- You can leave early only if the head teacher signs your note.
- In the computer room, students are allowed to bring water in closed bottles.
- Pupils are not allowed to run in the corridors.
- On Friday, everyone will have to attend the fire drill at 10 a.m.
- The trip is free, so you don’t have to bring money for the museum ticket.
- The sign on the science lab says, ‘Keep the laboratory door closed after class.’
- All students must be on time for morning assembly.
- For the school trip, please bring a signed permission slip from your parent or guardian.
- Feeling ill, Sara asked her teacher, ‘May I go to the nurse?’
- For online safety, students should never share their passwords with classmates.

