Modal verbs. Possibility.
Question 1
He ____ be able to help you.
should
may
can
Question 2
She ____ have to sell her car and other belongings to pay her debts.
might
may
could
Question 3
Where is Anna? – I don't know. She ____ be at the swimming pool or in the park.
may
have to
could
Question 4
It ____ be as easy as you think.
mustn't
couldn't
might not
Question 5
Don't ring the doorbell when you get there. Maria's little baby ____ be sleeping.
can
may
must
Question 6
How did the robbers get in? – We don't know yet. The old woman ____ to lock the door.
might have forgotten
might forget
could have forgotten
Question 7
I called her but there was no answer. She ____ for New York already.
may leave
could have left
may have left
Question 8
When can I see him? ____ come back before six today?
Is he likely to
May he
Might he
Question 9
I wonder who wrote that letter. ____ Jim have written it?
May
Could
Might
Question 10
He said that he ____ go to Italy in June or July.
can
may
might