Fill the gaps using must, may or can’t.
It be your mother. She looks so young!
Ann be at school right now. I spoke to her on the phone 10 minutes ago.
Carol be at home. I don’t really know.
Jane be at work. I am sure today is her day-off.
He know her husband. They work for the same company.
She be having breakfast. She never has breakfast at home.
This car be mine. Mine is red.
She have to leave her children with her mother, but she isn’t certain yet.
You have eaten the whole cake, it was so huge!
She like French rolls. She buys them sometimes.
Can't
Must
May
Must
Must
Must
Can't
May
Can't
May