MISTER NICOLÁS MUST CORRECT THE HOMEWORK BEFORE THE LESSON, THE STUDENTS HAVE TO READ THEIR NOTES BEFORE THE LESSONS, MISTER FEDERICO MUST ARRIVE AT SCHOOL AT NINE IN THE MORNING, STUDENTS DON'T HAVE TO BRING EXTRA MARKERS FOR THE BOARD, TIM NEEDS TO ASK A QUESTION OF THE TEACHER, YOU MUSN'T DRINK MATE IN CLASS, YOUR PHONE MUST BE IN SILENT MODE, I HAVE TO GO TO BED EARLY TONIGHT,

MODAL VERBS / Put the words in order.

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