You ______ drink alcohol before you turn 18.
mustn't
You _____ drive until you get your driving licence.
mustn't
You ________ whisper, no-one can hear us anyway.
don't have to
Dentists say you _____ brush your teeth every day, at least twice.
have to
We ______ do our homework, otherwise we'll get a sad face.
have to
You ______ smoke in the classroom.
mustn't
We _____ use our phones during lessons without the teacher's permission.
mustn't
I _______ call my grandma tomorrow. I haven't talked to her for too long!
must
Passengers ______ talk to the bus driver.
mustn't
Oh come on, it's my birthday! You _____ come.
must
I _____ stop smoking, it's bad for my health.
must
Look at all that snow. It ____ be cold outside.
must
You ______ bring anything, I'll make dinner.
don't have to
We _______ wear a uniform at our school.
don't have to
Until the age of 16, children _____ go to school.
have to
You _______ talk to strangers, it can be very dangerous!
mustn't