You ______ eat a lot of sweets. It's bad for your teeth.
shouldn't
should
You ______ cross the road when the light is red.
mustn't
must
I ______ ride a bike when I was five years old.
could
can
My father is a pilot. He ______ travel a lot.
has to
have to
It's raining. You ______ take an umbrella.
should
shouldn't
You look tired. You ______ go to bed early.
should
shouldn't
She ______ drive a car when she was 18
could
can
He ______ go to work yesterday because he was ill.
didn't have to
had to
We ______ be quiet in the library.
mustn't
must
I ______ wear a suit to the party yesterday. It was very formal.
have to
had to
She ______ work late last night.
has to
had to
They ______ go to the meeting. It's optional.
don't have to
mustn't
A firefighter ______ be brave.
doesn't have to
has to
He ______ cook because his wife makes dinner.
must
doesn't have to
Sing "I have to sing"