You..... use your phone
mustn't
The subject of this lesson is...
science
Teachers can relax there
Staff room
You can learn ..... in this lesson
foreign languages
You ....... run in the corridor
mustn't
What subject is this?
Biology
You ...... be quiet in the library
must
You......put litter in the bin.
must
This woman is working in a ....
school office
You .......drink in the computer room
mustn't