On a plane, you _________ fasten your seatbelt and you _________ use your phone.
must / have to || shouldn't / can't / mustn't
To recycle correctly, we __________ put all the paper in the blue container.
must / have to / should
_________ we finish class earlier today?
Can
Nowadays, I ___________ swim very fast.
can / am able to
The doctor says I __________ lose 5 kilos to be healthy.
should
In 2005, I ____________ speak German very well but now I have forgotten everything!
could / was able to
Tomorrow you _______________ bring any food to the picnic, we have bought everything!
don't need to / don't have to
Last summer, Mary _____________ work during July and August. She was exhausted!
had to
In Spain, you ____________ smoke in public places.
aren't allowed to / can't / mustn't
Sharon ____________ wear T-shirts in winter, she'll catch a cold!
shouldn't
Next weekend, we _________ go on a trip to the mountains.
can / could
Last night I __________ sleep because my neighbour was playing the guitar at 2am!
couldn't