You look freezing. You ________ worn a coat.
could have
should have
might not have
Ask that question again; the teacher _____ heard you.
can't have
could have
shouldn't have
Your brother has been using your email account. You ______ told him your password.
couldn't have
mustn't have
must have
Jack is really upset. You ______ laughed at him!
shouldn't have
can't have
may not have
I sent you a postcard, but you _____ received it yet.
might not have
may have
should have
Your phone is dead. You _______ recharged it this morning.
shouldn't have
might have
can't have
I can't remember when I last saw you. Maybe it was last April, or it ________ been in the summer.
can't have
might have
must have
You _______ invited Sam to your party. He's a really nice guy.
might not have
can't have
should have
Let's run for the bus. It _______ left yet.
should have
may have
might not have
