The phone is ringing. It ________ be Charlotte; she said she would call this morning.
might/may/could
must
can't
She _________ be in love with him. She told me she hates him.
must
can't
might/may/could
He ________ be at the gym right now. Sometimes he goes there at this time.
can't
must
might/may/could
This is not possible. You ________ be serious!
must
can't
might/may/could
If he drives a jaguar, he _________ be quite rich.
can't
might/may/could
must
You should pick up the phone. It ________ be an important call.
can't
must
might/may/could
He _______ know the answer, he's the best in the class.
might/may/could
must
can't
You _________ be right, but it's better if we check.
must
might/may/could
can't
He __________ be in class. I saw him at the library a minute ago.
may/might/could
can't
must
A: Who's at the door? B: I don't know; it _______ be John.
must
can't
may/could/might
