You ________ practice English every day to speak well.
must
You ________ clean up after your dog in the park.
must
You ________ wear a seatbelt in the car.
must
Drivers ________ stop at a red light.
must
If you are sick, you ________ stay at home.
must
Students ________ cheat on exams.
mustn't
You ________ use your phone while driving.
must
You ________ water the flowers outside.
must
Children ________ play with matches.
mustn't
You ________ drop rubbish on the ground.
mustn't
You ________ put your rubbish in the bin to keep the street clean.
must