Does he _________ on Friday afternoon?
has to work
have to work
have to works
has to works
We ___________ the calculator during the exam
mustn't use
has to use
should use
mustn't to use
If we want to arrive by 6pm, we __________ late for the train.
must be
dont' have to be
shouldn't to be
shouldn't be
You _______ remember to close the windows when you leave the house.
must
shouldn't
has to
mustn't
