He works in a call-centre and he sometimes ______ work at night.
must
has to
shouldn't
should
Mark's a salesman. He ............... travel a lot.
has to
have to
must
If you can't sleep, you .................. drink coffee before you go to bed.
shouldn't
don't have
mustn't
Do you ...................... wear a tie for school?
has to
must
have to
Passengers .................. fasten their seat belts.
must
should
have to
I __________ get up really early yesterday. I had a meeting at 8.00.
must
had to
have to
should
You ...................... brush your dog's hair regularly.
should to
must
have to
I ................ wear a uniform when I was at school.
had to
must
have to
You ............ park here. It's an emergency exit.
mustn't
must
shouldn't
The museum is free. You ......................... have to pay.
shouldn't
don't have to
mustn't
I think we ........................ go now. It's late.
must
should
have to
I think people ............... recycle more paper and glass.
should
have to
must
You ___________ put your phone into flight mode when you fly.
have to
should
must to
must
You ___________ get a visa to visit the USA.
shouldn't
must
should
have to