I'm sure he's at home --- HE ___ AT HOME
HE MUST BE AT HOME
It's impossible that he knew the problem ---- HE ............. THE PROBLEM
HE CAN'T HAVE KNOWN THE PROBLEM
I'm sure they didn't phone you --- THEY __________ YOU.
THEY CAN'T HAVE PHONED YOU.
It's possible that he went to bed early. ---- HE ________EARLY.
HE MIGHT HAVE GONE TO BED EARLY
You're not allowed to speak Spanish in the class. (MUST)
YOU MUSTN'T SPEAK ENGLISH IN THE CLASS.
If I were you, I'd tell the truth. ---- YOU ______________ THE TRUTH.
You SHOULD tell the truth
It is obligatory for you to wear a uniform. --- YOU ________________A UNIFORM
You HAVE TO WEAR a uniform
It is not necessary for them to cook lunch. --- THEY __________ LUNCH
They DON'T HAVE TO COOK lunch
When she was ten years old, she had the ability to read people's minds. ----- SHE__________________ PEOPLE'S MINDS WHEN SHE WAS TEN YEARS OLD.
She COULD READ people's minds when she was ten years old.
It was careless of him to go without checking the time. --- HE ____________ THE TIME BEFORE GOING
He SHOULD HAVE CHECKED the time before going.
You ought to start studying now if you want to pass! (BETTER)
You had better start studying now if you want to pass!
Maybe Paul is preparing the wedding for Friday. (MIGHT) --- Paul ___ the wedding for Friday.
PAUL MIGHT BE PREPARING THE WEDDING FOR FRIDAY.
Perhaps they came up with a better solution last night. (MAY) --- THEY _________ UP WITH A BETTER SOLUTION LAST NIGHT.
They MAY HAVE COME up with a better solution last night.
