All the lights are off. They _________ (must) have gone to bed.	
Better buy plenty of water. There _______ (may / might) not be another shop for miles.	
Cars left here _______ (will) be removed without warning.	
Every day after school we _________(would) go straight to the river and swim.	
He looked happy so he________(must) have had a good time at the party.	
I ________ (couldn’t) find any of your favourite coffee in the supermarket so I got this instead.	
I _________(can’t) believe she passed the exam. She didn’t do any work!	
I woke up suddenly in the night. It _______(must) have been two or three o’clock in the morning.	
I’m afraid you _______ (can’t) smoke in here. It’s a no smoking area.	
It’s a pity Andrea can’t come. She ________(would) have enjoyed it, I’m sure.	
It’s Dora’s birthday on Saturday. I _______(must) remember to get her a card.	
Joan wasn’t feeling well this afternoon so I’m sure she _______(won’t) be at the party.	
John called to say he ________ (may / might) be late and if he is, don’t wait for him.	
Keep your voice down! Some people _________(may / might / could) still be asleep.	
Let’s take a look upstairs,  _________ (shall) we?	
Martin’s gone to Australia so it _________ (can’t) have been him that you saw yesterday.	
Mum! Kevin _________(won’t) let me play with his plane. It’s not fair!	
She ___________(shouldn’t) have shouted at him like that. It wasn’t his fault and he looked really upset.	
These dogs are normally very good-natured but they _______(can) be aggressive on occasions.	
They _________(should) have finished by now but knock on the door anyway before you go in.	
We _________(would) have had ice-cream for dessert but Millie ate it all so we’ve got fruit instead.	
We’ll have to cancel the walk. It’s a pity but it ________(can’t) be helped.	
You _______ (couldn’t) lend me $50, _________ (could) you?	
You ________ (can) get plastic party cups at most supermarkets.	
You ________(mustn’t) tell anyone that I told you. It’s a secret!	
You __________ (can’t) pay by credit card in the pub so make sure you take some cash.	
You ___________ (can / may) play in the park but you ________(must) not swim in the lake. Is that clear?	
You ___________ (could / may / might) have left it in the car.	
You ___________(could / should) have told me the picnic was cancelled! What am I going to do with all this food?	
You’re so lucky! It ______(must) be great working only six hours a day.	

can't	couldn't	could	can	mustn't	
can't	can	may	must	could	
may	might	could	shall	can't	
may	might	could	should	must	
must	may	might	will	would	
must	couldn't	can't	must	can't	
won't 	shouldn't	can	should	would	
would	must	won't	may	might	

can't	couldn't	could	can	mustn't	
can't	can	may	must	could	
may	might	could	shall	can't	
may	might	could	should	must	
must	may	might	will	would	
must	couldn't	can't	must	can't	
won't 	shouldn't	can	should	would	
would	must	won't	may	might