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Deduction or speculation?
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I'm sure they aren't at work today. )
They can't be at work today.
Oops!
Okay!
It is possible that you forgot your wallet at home.
You might/could/may have forgotten your wallet at home.
Oops!
Okay!
It is impossible that he is Spanish.
He can't be spanish.
Oops!
Okay!
Kate is shivering. She ------------- be cold.
must
Oops!
Okay!
Perhaps he left the car unlocked.
He might / could / may have left the car unlocked.
Oops!
Okay!
Did you hear me come in last night? No, I (be) -----asleep.
must have been
Oops!
Okay!
John will probably come to the party.
He may / might come to the party.
Oops!
Okay!
I'm sure she is at home today.
She must be at home today.
Oops!
Okay!
I'm sure you didn't ferget doing your homework.
You can't have forgotten doing your homework.
Oops!
Okay!
Emily is crying. She --------------- be sad.
must
Oops!
Okay!
I had an umbrella when I came out but I haven't got it now. You (leave) ------------- it on the bus.
might / could / may have left
Oops!
Okay!
I'm sure Jane is sleeping now.
Jane must be sleeping now.
Oops!
Okay!
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