There's a bit of traffic, so I ______ arrive in time.
might not
She isn't answering the phone. She _______ be out.
must/might
Sorry, but I'm not Luis. You ______ confused.
must be
He _______ have a job interview today - he's waiting to hear from the company.
might
Sara's very busy. She ________ not be able to come tonight.
might
You have walked for ten hours. You ______ tired
must be
He drives an expensive car. He ________ have a good job.
must/might
They _________ be Spanish, they're speaking Portuguese.
can't
They ______ twins, they look similar.
must be/might be
If Gabrielle said that, it ______ true. She never lies.
must be