You ....................... watch too much TV because it is bad for your eyes.
mustn't
You ................... cheat during an exam.
mustn't
We ................. hurry up or we will be late
must / have to
My father .................... work on Saturdays
has to/ must
My father ...................... eat too much butter the doctor says
mustn't
You ......................... ride your bike without a helmet. It's dangerous!
mustn't
I ........................................get up early tomorrow because I am going to the airport
must
I ............................ buy a new computer. My old one is broken
have to / must
Do we ..................... study every day at Kilgraston school?
have to
My parents ................. travel by bus because they don't have a car
have to/ must