Modal verbs (present)
It's forbidden to go near the launch pad.
mustn't
You ......................near the launch pad.
mustn't go
It wasn't necessary for her to come early, but she did.
have
She ......................................early.
needn't have come
I'm certain Andrew didn't reveal your secret.
can't
Andrew .............................. your secret.
can't have revealed
Do you think Laura will leave for Chicago earlier than she thought?
likely
Is Laura ...................... for Chicago earlier than she thought?
likely to leave
I advise you to send them a letter of apology.
ought
You ........................them a letter of apology.
ought to send
Our teachers never let us leave the school.
to
We were not ................................. by our teachers.
allowed to leave the school
I'm sure Robert realised how wrong he was.
must
Robert ...................................... how wrong he was.
must have realised
Everyone is supposed to pay taxes to the government.
should
Everyone ...............................taxes to the government.
should pay
It isn't necessary for Ron to pay for our tickets.
need
Ron ................................ for our tickets.
doesn't need to pay
It wasn't obligatory to go to work today. I thought it was!
need
I .............................. to work today.
need not have gone
It is possible tht they will sell their house.
may
They ................................... their house.
may sell
You should have finished that report, not John!
were
You ........................................ that report, not John!
were supposed to finish
I think we will arrive at 7pm if the weather remains good.
should
We .............................. if the weather remains good
should arrive at 7pm.
It was a mistake of you to lose your passport.
lost
You ............................................ your passport.
shouldn't have lost
My car keys are possibly in the kitchen.
might
My car keys ......................... the kitchen.
might be in
What do you advise me to do?
I
What ..............................?
should I do
If I were you, I would go and speak to your boss.
had
You ............................ your boss.
had better speak to
It was silly of you to speak to your boss like that.
spoken
You ....................................... your boss like that!
shouldn't have spoken to
It is possible that Mike isn't at home now.
be
Mike .................................. home now.
might not be at/may not be at
Is it possible to smoke in this room?
allowed
Is ................................... this room?
smoking allowed in