Correct or incorrect
It is 3:10, and she leaves at 2.00. She must left an hour ago.
Incorrect
I studied a lot. I ______________________ failed the exam.
can't have.
I don't know, but she must have been at the party.
incorrect
no points
=(
They can't have sold their house. I saw them there a couple of hours ago. It is impossible.
Correct
I _______________ left my phone at Anna's house. I'm sure I have it there.
must have
no points, sorry
=(
It is possible I ____________________ left the umbrella on the bus, or mybe in the office. I'm not sure.
might have