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.

I don't go to school on Sundays.
We mustn't make noise. My little sister is asleep.
I musttn't  spend much money.
I don't do this exercise in writing.
He doesn't forget to main this letter tomorrow.
You don't come to the party.
You mustn't to eat it if you don"t like it.
They don't to study music this year.