May and might
May, Might and could
You ____ leave if you've fished.
May
may have
may not
____ I come in?
May
Might
May have
____ you turn the heater up, please?
May not
May
Could
I ____ not go today to the party, I have a lot of work still.
Couldn't
Might have
Might
You ________ use your cellphone during the exam.
May not
Might not
We ______ get into the concert without tickets, but we can ask.
Might have
Might not
May I go out and play?
You ____. You have to finish your homework.
Might not
May not
I want to enter the building.
You _____ enter until you get clearence.
May not
Might not
Youre mother seems angry, perhaps you forgot to call her.
I ______ forgotten to call her.
May not have
Might have
Could
I haven't seen Robert all day. Where is he?
I'm not sure he _____ gone home early.
May not have
Might have
Might
This is a terrible mistake and we lost a lot of money.
I'm sorry, I _____ prevent it by being more careful.
May not have
Might
Could have
Did you forget your wallet at home?
I _____ forgotten it at home or at school.
May have
Might not have
Could
I can't find my keys. I _______ left them at the office, I checked before I left.
May
couldn't have
might not have
Why did Nick take the bus yesterday instead of driving his car?
His car was at the car shop, it ______ been fixed yet.
May not have
couldn't have
might not
Why didn't Robert go to the party?
His ex was there, so he ______ wanted to go.
might not have
May not
couldn't have
Why is te report incomplete?
I'm not sure, perhaps Robert ____ finished it on time.
May not
couldn't have
might not have