If it's very cold, we ______ light the fire
can
You ______ go to bed now. It's too late.
have to
When I was at university, I ______ study very hard.
had to
This is a secret; you ______ say anything about it.
cannot / can't
I have fixed the toilet. You ______ call the plumber.
don't have to
The neighbors complained and the police told us that we ______ turn the music down.
had to
The lawyer told his client that he ______ confess his participation in the fraud.
didn't have to
You ______ finish your report before 4 o'clock.
have to
my father will bring the newspaper, you ______ buy it.
don't have to
If I want to go to the USA, I ______ get a Visa.
have to
You ______ smoke at the hospital.
can't
He ______ leave my house immediately; if not, I will call the police.
has to
Last summer, when we went to Greece, we ______ rent a car to visit all the ruins.
had to
My friend told me he ______ continue to study because he didn't have enough money.
couldn't
30 years ago, people ______ ride a motorbike without wearing a helmet.
could
She was late to class, so she ______ take the exam.
couldn't
