Fill in mustn"t or don"t/doesn"t to/
I ____ go to school on Sundays.
We ____ make noise. My little sister is asleep.
I ____ spend much money.
I ____ do this exercise in writing.
He ____ forget to main this letter tomorrow.
You ____ come to the party.
You ___ to eat it if you don"t like it.
They ____ to study music this year.