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.
It's getting dark, so I ought to walk you home. (BETTER)
It's getting dark so I'D BETTER TAKE you home.
It's just possible that he went to bed early. ---- HE ________EARLY.
HE MIGHT HAVE GONE TO BED EARLY
We have bought more food than was necessary for the party ---- WE _______ FOR THE PARTY.
WE NEEDN'T HAVE BOUGHT MORE FOOD FOR THE PARTY.
It was careless of him to go without checking the time. --- HE ____________ THE TIME BEFORE GOING
He SHOULD HAVE CHECKED the time before going.
I'm sure he's at home --- HE .................... AT HOME
HE MUST BE AT HOME
You mustn't speak Spanish in my class. (ALLOWED)
YOU ARE NOT ALLOWED TO SPEAK ENGLISH IN MY CLASS.
I'm sure they didn't phone you --- THEY __________ YOU.
THEY CAN'T HAVE PHONED YOU.
It is not necessary for them to cook lunch. --- THEY __________ LUNCH
They DON'T HAVE TO COOK lunch
Maybe Paul is arranging the ceremony for Friday. (MIGHT) --- Paul .................................................................................... the ceremony for Friday.
PAUL MIGHT BE ARRANGING THE CEREMONY FOR FRIDAY.
It is obligatory for you to wear a uniform. --- YOU ________________A UNIFORM
You HAVE TO WEAR a uniform
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.
If I were you, I'd tell the truth. ---- YOU ______________ THE TRUTH.
You SHOULD tell the truth
It's impossible that he knew the problem ---- HE ............. THE PROBLEM
HE CAN'T HAVE KNOWN THE PROBLEM