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