14 questions
It's possible that Simon will win the competition.
Simon might win the competition.
Simon must win the competition.
I'm sure that this answer is correct.
This may be the correct answer!
This must be the correct answer!
Perhaps Karl knows the answer to that question.
Karl may know the answer to that question.
Karl can't know the answer to that question.
I've got such a bad memory that I forget things.
I can't remember many things.
I may not remember many things.
You _____ be very intelligent to have won first prize.
can
must
The quiz show _____ be over now. It's only 7:45 pm
mustn't
can't
The answer _____ be 183.
could
can
You _____ be the winner. You didn't get all the answers right.
may not
can't
The other team _____ be right, but I'm not sure.
may
must
We _____ be asked difficult questions. They could be easy.
might
might not
Did you hear that noise? It ____ be my dog, it's in the garden.
may
may not
Doris is absent. She _____ be ill.
might not
may
My dad doesn't want to talk to my boyfriend. He _____ like him.
might not
can't
Someone's at the door but it _____ be my uncle. He's in the USA.
mustn't
can't