In Singapore you _____ chew gum anywhere. It's the law.
mustn't
Students ______ pay attention!
must OR have to
I ______ wake up early on Saturdays. I can sleep late.
don't have to
You _____ sleep during the lesson.
mustn't
Students ______ listen to the teacher.
must OR have to
We ______ arrive to school on time.
must OR have to
We _____ wear school uniforms every day.
must OR have to
My friends and I ______ go to school on Sundays.
don't have to
In Japan, schoolchildren _____ clean their classrooms every day.
must OR have to
Children ______ run in the corridors. They may hurt themselves.
mustn't