I ___________ have left the window open. That's how the cat got in.
must
He _________ have left the office yet. It's only 3 o'clock and he works until 5.
can't
Look at her diamond ring. It's so big, it _________ have cost a fortune.
must
Patrick isn't answering his phone. He _________ have switched it off or left it at home.
might/may
She _________ have misunderstood my directions. That's why she is late.
must
He _________ have gone to the beach. He hates being in the sun.
can't/couldn't
I _________ have written down the number incorrectly. I just called a hospital, not the restaurant.
must
John _________ have been very happy when he found out he was going to be a father. He's wanted this for a long time.
must
She _________ have gone to the city centre. She did say she wanted to go shopping.
might/may/could
We don't know for sure that Alex broke the coffee table. It _________ have been the dog.
may/might/could
Why were there no buses yesterday? Maybe it was the snow or they _________ have been on strike.
might/may
How did she fail that exam? She _________ have studied very much.
can't/couldn't
You _________ have seen her yesterday. She has been on vacation for a week now.
can't/couldn't
He _________ have gone to Canada. He doesn't have a passport.
can't/couldn't
Oh no! My wallet isn't in my bag. I _________ have left it at home.
must
I _________ have left my keys at home. I remember locking the door when I left this morning.
can't/couldn't
