present
I'm not sure I'm going to pass the exam. I don't feel very confident.
might not pass
I don't know where they went but they _________ gone to Paris or Marseilli
could have
It’s impossible that this watch is from the 19th century.
> This watch __________________.
can't be from the 19th century.
I'm not sure I trust Peter. He ______ the person we think he is.
might not be
She definitely told him the truth.
must have told
I’m sure this vase is very valuable.
> This vase ________________.
must be very valuable.
He ______ be our teacher! He looks about twelve.
can't
It definitely wasn’t my brother who called you all night long. He was sleeping.
couldn't have been
He definitely forgot to write down the message.
> He _______________________________.
must have forgotten to write down the message.
Do you know where my key are?
It _____ be in the dining room. Have you looked there?
could/might
He wasn't answering the phone before. Maybe he went to the shop or he _____ been in the shower.
might have
I'm sure he is here - I can see his car in front of the building.
> He ________________ - I can see his car in front of the building
must be
My mom is very strict to us. We _____ be home before 10 o'clock.
must
Sarah looked so happy. She _____ have passed all her tests.
must
It’s possible that he buried the treasure.
> He _______________________.
might have buried the treasure.