Students _________ use their mobile phones during the lessons.

Teachers _________ wear suits to work, but their clothes must be clean and tidy

You _______ arrive on time for lessons. It's important not to be late.

Students and teachers ________ be polite to each other.

Students ______ take an exam at the end of the year.

We ________ leave right now. We are going to be late for school.

We _______ speak loudly in the library. There are people want to read in peace.

Jack ________ buy another car because he already has three.